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Blood Sweat Tears and Grease => Projects => Restorations => Topic started by: Maritime on Nov 21, 2016, 19:41:28

Title: 82 Virago 750 help a buddy get back on the road winter project.
Post by: Maritime on Nov 21, 2016, 19:41:28
OK a lady I work with knows I tinker on sickles and her husband has a bike a friend was supposed to get it running better and shagged it up.I checked it over tonight and a few bits and I'll get it to the point I'll know I can fix it or toss it.
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: Maritime on Nov 21, 2016, 19:50:28
So that can gear was spun and I wonder can I swap the gear over to prevent the spinning again.
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: advCo on Nov 21, 2016, 21:00:52
Wasn't tightened up and the little nib tore up the sprocket huh?


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Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: Bozz on Nov 21, 2016, 21:15:18
There's bound to be a donor engine somewhere with a cam sprocket.  Flipping it might work to make sure everything turns over, but I wouldn't run it like that.
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: Oz350Four on Nov 22, 2016, 03:02:43
I'm with Bozz on that one...
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: hillsy on Nov 22, 2016, 05:59:20
As long as the offset is the same and you transfer the timing mark I don't see why you can't run that sprocket backwards.
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: Kamn on Nov 22, 2016, 08:17:58
I have to agree with Hillsy, if the offset is the same then no reason why you cant run her backwards.
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: Tune-A-Fishİ on Nov 22, 2016, 09:30:29
Took some serious torque to rip that gear out... ask yourself what could interfere with the cam to cause the damage. I will buy you the head gasket if a valve is not bent  :o
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: verboten1 on Nov 22, 2016, 09:59:07
Yeah, check the cam, They are known to seize up.
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: Maritime on Nov 22, 2016, 10:29:38
Ha I typed a reply but it didn't show up. Anyway yes the cam was seized and has been replaced along with followers/rockers, the cam lobes are brand new and it spins in the head so that much was done by the previous "Mechanic" I am going to bolt the cam gear on, get the missing tappet adjusters and set the valves/timing etc then turn it over slow, if it doesn't make any bad noises and turns easy, I'll do a compression check, if that checks out, I'll keep going, if it doesn't I'll take the head back off and see what's wrong. It looks like it was put on and the guy did tell Jimmy he didn't torque the head yet so I will do that as well.
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: Maritime on Nov 22, 2016, 11:06:48
Did up a basket in Bikebandit, they have everything but one bolt I should be able to find someplace. its on the fiche but not the parts list, doesn't look special so I should be able to get it. less than 50 for the missing stuff so not too bad.
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: Tune-A-Fishİ on Nov 22, 2016, 11:29:05
🏻‍♀️


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Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: Maritime on Nov 22, 2016, 11:35:16
I have to clarify something. I think the owner said buddy told him there are no head gaskets on this bike, which is wrong, so I am going to lift the head off a bit and see if there is the head and cam chain opening gaskets, no point torquing the head down and doing a compression check if dude didn't put the gaskets in.
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: advCo on Nov 22, 2016, 12:45:49
That "mechanic" sounds like a winner.
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: Maritime on Nov 23, 2016, 10:46:07
So I talked to Jimmy the owner and his buddy told him Viragos don't use head gaskets, since the FSM and parts fiche says the do, a top end gasket kit is ordered and I will be pulling the head. I think I am going to pull all the rockers and cam and everything out and double check and measure them to be sure that everything is ok. Man some peoples children shouldn't be allowed to play with tools!  I could have put it all together, did a compression check and found out the hard way when air pissed out between the jug and head.
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: Bozz on Nov 23, 2016, 15:11:15
Common sense isn't...
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: Maritime on Nov 23, 2016, 15:30:10
Ha so true Bozz. The guy is a sled mechanic and does 2 strokes all day long I guess. A lot of 2 strokes don't use a head gasket so that's likely where he is coming from but still. look it up in the fucking book.  He was definately winging it without a manual. Sad thing is the bike was with the dude 3 years and he was supposed to be doing a favor. The wife is sure she got a gasket kit to back when the job was started and it would have had the head and cam chain opening gaskets in it.
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: Maritime on Nov 24, 2016, 20:52:55
Popped the head off. Looks OK I side the old head gasket was there along with the oring for around the cam chain opening but both were the old original and suspect.  New ones coming.  2 mins with a scotch Brits and piston shows no damage.  Bore is perfect. Mirror shine no signs of damage or wear. Valves seat proper so I feel better now.  The only weird thing was dude before me put a red something that was like saran wrap on the head, my guess is a sealant used on 2 strokes.  I cleaned it all off a d won't be using it.
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: Tune-A-Fishİ on Nov 24, 2016, 21:14:30
Shifters bent  ;D
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: Maritime on Nov 24, 2016, 21:15:57
Yes, I saw that today as I pulled the crank bolt cover.
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: Maritime on Nov 24, 2016, 21:16:31
I'll sort that down the road. Motor work first.
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: teazer on Nov 25, 2016, 00:10:17
.... The only weird thing was dude before me put a red something that was like saran wrap on the head, my guess is a sealant used on 2 strokes.  I cleaned it all off a d won't be using it.

Interesting and hard to visualize.  Was it a painted finish inside the heads or something wrapped around the outside?  If it was a red paint cpoating on teh internal surfaces, it may have been Glyptal which is used to seal porous surfaces usually on 4 strokes. http://www.eastwood.com/glyptal-red-brush-on-1-qt.html

Or was it something completely different?
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: Maritime on Nov 25, 2016, 09:45:25
Interesting and hard to visualize.  Was it a painted finish inside the heads or something wrapped around the outside?  If it was a red paint cpoating on teh internal surfaces, it may have been Glyptal which is used to seal porous surfaces usually on 4 strokes. http://www.eastwood.com/glyptal-red-brush-on-1-qt.html

Or was it something completely different?

It was transparent red and dried like a thin plastic, he put a thin coat on the head mating surfaces. It came off in flakes and the stuff that didn't came off with a little carb cleaner and simple green.  I've never seen it before but I have also only been in 5 motorcycle motors so far in my lifetime as well. you can see little bits of it on the head around the locating sleeves that I didn't completely clean yet, I should have taken a pic of it before I cleaned it all off. live and learn.
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: HerrDeacon on Nov 25, 2016, 09:48:08
Sounds like it could be red Loctite.
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: Maritime on Nov 25, 2016, 09:57:39
Maybe, weird thing to put on a head? not even sure it would take the heat of combustion. I'm glad I pulled it now and can put it back on right, He didn't even remove the cam tensioner so I'm guessing that's why he didn't get the sprocket bolted back in place
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: Maritime on Nov 29, 2016, 13:12:44
So parts I need come in on the 7th at the Yamaha dealer, I went and grabbed the 2 6205 bearings to swap out the solid bushings, came in at $18.50 after tax,  from what I read it's one of the best mods you can do to these heads to save the cams and free up some rev's. Straight bolt on too. For less than 20 bucks and maybe an extra half hours work to do the front I'd say worth it.
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: Maritime on Mar 02, 2017, 14:51:54
Wow, been too long., anyway Jimmy came over last Sunday and we Torqued the rear head, then pulled the cam bushing on the front head and swapped in the bearing. I opened the carbs, should have gotten pictures of the mess LOL. Hair, straw, mouse poo you name it. I am going to either make a Ichiban ultrasonic cleaner from a sander and Tupperware dish and use pinesol on the bodies and carb cleaner on the brass or do the lemon juice boil. Figure that out for the weekend.  Did a compression test, it just passed 100 PSI but was exactly the same on both cylinders so my guess is it will be in correct range once the bike is running again. also my booster pack was weak I was using to turn over the motor. Next, I found out the manual I downloaded the first time was incomplete, found another and now have the specs on the carbs. PO to Jimmy put what appear to to be aftermarket open pipes. then rejetted with the wrong brand of jet as the Mains were 125 and from my research, Hitachi jets go up by 2's, so this is a mikuni Jet = to about a 124. Stock is 122 so the 1 step up for open pipe and drilling the plugs over the mixture screws to richen was done, I am going to get 124, 126, 128 jets and some needle shims and should be able to tune it in with the help of a good article I found.  sorry no pics but I'll get some.
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: Maritime on Mar 02, 2017, 19:19:18
Red neck ultrasonic pinesol bath.
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: Maritime on Mar 02, 2017, 19:20:32
Sabder will likely shit the bed but I paid 5 bucks for it.  Smells great and the cooler should be sparkling clean along with the carbs.
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: advCo on Mar 02, 2017, 19:22:41
Red neck ultrasonic pinesol bath.

Hah I like the cooler. I usually use tupperware and a ton of duct tape. Works great.
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: BillyGoat4130 on Mar 02, 2017, 21:41:51
Red neck ultrasonic pinesol bath.

Does that work? I tried making something similar years ago and couldn't ever seem to do much for me. Share your secret lol
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: Drey6 on Mar 02, 2017, 23:18:30
If you can split racks in the future, or even for this one seeing how the carbs are separate-the cheap HF $80 cleaner has worked well for me. I used a distilled water mix with some lemon juice and PB Blaster.  Just flipped it around during the cycle since one end will be slightly exposed. AMAZED with the results! I remember the late night I was out there, stoked by how they came out!

Later on I had some stuck jets and poured from my PB Blaster gallon in the cleaner by itself, worked well. Insane how much I've used that PB bath on countless other items since. I save it in a container if going back to the distilled water mix, it's pricey!! Drop rusty parts in, wrench on the bike- come back and hit it with the steel wool and continue. I definitely want a more industrial unit in the future to save time if flipping s bike, drop that whole rack in, but for now it's been good to me. With coupon was just at $65 with tax. Top two are distilled mix before and after, and the other was after I did some quick polishing on the tops. I'm sure you have one in your own shop already, I think everyone on here has had this very unit at some point

(https://uploads.tapatalk-cdn.com/20170303/35857714e15591be34849f0e89d80707.jpg)


Sent from my iPhone using Tapatalk Pro
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: Maritime on Mar 03, 2017, 09:41:06
Does that work? I tried making something similar years ago and couldn't ever seem to do much for me. Share your secret lol

I had them in a big 4 gal jug I cut the top off then tried to put back on and it worked better but pinesol was flying everywhere, the coolers double wall took away most of the vibes. I am going to look for a tupperware big enough and try it again, this worked ok but I think another round in a thinner container would yield better results
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: BillyGoat4130 on Mar 03, 2017, 09:47:16
I had them in a big 4 gal jug I cut the top off then tried to put back on and it worked better but pinesol was flying everywhere, the coolers double wall took away most of the vibes. I am going to look for a tupperware big enough and try it again, this worked ok but I think another round in a thinner container would yield better results

Don't want to side-bar your thread, but what I found with mine was that although I had the strength of the oscillations, I didn't really have a high enough frequency/speed of them I figured to really make it work right. I built a big one out of a plastic 55 gallon drum, made lots of bubbles and I hung the part from the top thinking the cavitation would hit the parts and do some work, but I let it run about 8 hours once and couldn't tell any difference at all so I gave up on it.

/?taken-by=hondaatc

I'll keep an eye on this because I'd like to revisit mine if yours works good for you.
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: JustinLonghorn on Mar 03, 2017, 09:53:47
Glad to see you getting back to the wrenches, man.
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: Maritime on Mar 03, 2017, 10:14:25
Glad to see you getting back to the wrenches, man.

Thanks, me too.
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: Maritime on Mar 03, 2017, 10:19:00
Don't want to side-bar your thread, but what I found with mine was that although I had the strength of the oscillations, I didn't really have a high enough frequency/speed of them I figured to really make it work right. I built a big one out of a plastic 55 gallon drum, made lots of bubbles and I hung the part from the top thinking the cavitation would hit the parts and do some work, but I let it run about 8 hours once and couldn't tell any difference at all so I gave up on it.

/?taken-by=hondaatc

I'll keep an eye on this because I'd like to revisit mine if yours works good for you.

No worries. the 55 gal might just have been too big. When I had them in the windshield washer jug it really shook the shit out of them, literally stuff was just coming out like crazy but the pinesol went everywhere and I had to find a better container. the cooler was the only thing that they fit in but it barely aggitated at all.  I think the one sander in a 12"x12" x 12" approx container with non double walls would work well. Going to give them another round, they are a lot cleaner than they were but I think they can be cleaner.  also the damn cooler fell off the stool about 10 min in and I lost all my cleaner. Floor is spotless now though LOL.
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: Maritime on Mar 03, 2017, 10:22:58
If you can split racks in the future, or even for this one seeing how the carbs are separate-the cheap HF $80 cleaner has worked well for me. I used a distilled water mix with some lemon juice and PB Blaster.  Just flipped it around during the cycle since one end will be slightly exposed. AMAZED with the results! I remember the late night I was out there, stoked by how they came out!

Later on I had some stuck jets and poured from my PB Blaster gallon in the cleaner by itself, worked well. Insane how much I've used that PB bath on countless other items since. I save it in a container if going back to the distilled water mix, it's pricey!! Drop rusty parts in, wrench on the bike- come back and hit it with the steel wool and continue. I definitely want a more industrial unit in the future to save time if flipping s bike, drop that whole rack in, but for now it's been good to me. With coupon was just at $65 with tax. Top two are distilled mix before and after, and the other was after I did some quick polishing on the tops. I'm sure you have one in your own shop already, I think everyone on here has had this very unit at some point

(https://uploads.tapatalk-cdn.com/20170303/35857714e15591be34849f0e89d80707.jpg)


Sent from my iPhone using Tapatalk Pro

Yep those look great. I do not want to take mine apart and lose something or screw up the sync etc so I am going to try another container that is just big enough to fully submerge the two together.
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: Maritime on Mar 03, 2017, 14:30:40
(http://www.dotheton.com/forum/index.php?action-gallery;sa=view;id=2471)
Title: 82 Virago 750 help a buddy get back on the road winter project.
Post by: Drey6 on Mar 04, 2017, 01:00:50
Thanks man! Yeah disassembling is not fun, if I knew it wasn't going to be a SLOW rebuild I would have opted for a quickie clean/rebuild but for a $150 bike I figure might as well take my time as funds open up quite a bit at that starting price.

Enjoying this rebuild thread! Nice to see someone genuinely help another out! I've been luck on the advice end for sure.

I once had an 82' Virago but had major title issues and dumped it- for the best. I had too many back burners as is and for once, looking back I made a good decision. Maybe that's what I'll drink to tonight, 1 good decision lolol. PS- your photo didn't load, but I am on tapatalk, not sure if that changes things!
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: Maritime on May 06, 2017, 16:48:22
Wow been a bit.  Been tinkering but today we got some real work done. 

Went from this

(http://www.dotheton.com/gallery/1732-060517104311.jpeg)

To this

(http://www.dotheton.com/gallery/1732-060517144405.jpeg)
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: Maritime on May 06, 2017, 16:49:32
Noticed coils are missing as is footrest bracket on one side and various other nuts abd bolts.  Need to hit ebay for whats left and then it will be a rider.
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: Maritime on Jun 04, 2017, 17:13:03
So it now runs. Still missing a couple small parts but it fired up and idled perfect.
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: Maritime on Jun 04, 2017, 17:14:18
Feels good to have taken someone elses mess, fix it and make it run
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: Bozz on Jun 05, 2017, 11:26:23
Indeed!  First fire and run after inheriting a basket case is extremely rewarding.
It's a total frankenstein moment.
It Lives!
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: Maritime on Jun 05, 2017, 11:30:12
Ha yep, all I need now is 2 missing engine mount bolts and a clamp for the throttle cable and we can ride it down the road, I need to do the check all the nuts and bolts and air pressure too but so close to going from a pile of parts to a ridable bike, feels great.
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: advCo on Jun 06, 2017, 10:55:06
Nice work Mike, now finish that GL!


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Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: Maritime on Jun 06, 2017, 11:09:26
Still have to test ride and check tuning etc. got the throttle clamp done last night and was able to rev the bike up and have it return to idle. seems to be nice and smooth reving so test ride will hopefully go well. And I have the colour scheme down on the GL and just need weather to cooperate, been humid or too cold last few days to paint outside, which I have to do with the 2K clear.
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: JustinLonghorn on Jun 06, 2017, 17:57:47
I love it when a plan comes together.
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: irk miller on Jun 06, 2017, 18:49:56
(http://2.bp.blogspot.com/-KmCp091WYwM/UzuNkmW6pMI/AAAAAAAABZc/IW8WxggOVW4/s1600/hannibal_a-team-jpeg.jpg)
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: Maritime on Sep 27, 2017, 16:08:43
Well it's been more than 30 days and a lot of learning on my part but over the weekend I got this thing to finally run right and haul ass down the road. Just in time to put it away for the winter LOL. I ruined 2 cams before I figured out the issue. The rear head intake rocker was heat seizing. Cold engine it moved fine, fire the bike up and it ran great on 2 cylinders until I got about a mile down the road, then the rear dropped and it ran like shit. First time the cam had broke clean off at the end and it looked like it had been damaged before I installed it. So I ordered another cam, installed it, same shit but this time just the pin broke off the end and I pulled the cam out when the bike was still hot, found the seized rocker. Waited for it to cool and sure enough it freed up. So ordered a new head/cam assembly for the same price I paid for the cam alone and dropped the motor, swapped the heads, re-installed and now everything works as it should. I even feel I got the jetting correct as it runs really strong, smooth revs etc. Don't know how fast I am going though as the speedo isn't working but I'll sort that later. 

Also, in the many starting sessions the solenoid shit the bed. I ordered one from Amazon and it failed the first start in the one position so the starter just kept turning over and over and over. Lesson, buy OEM on those, so that is on a USPS truck as we speak. 

This was the aftermarket one, stay away from it.
https://www.amazon.com/gp/product/B0073UMBNO/ref=od_aui_detailpages00?ie=UTF8&psc=1

Finally feel good about the bike, was a bit worried I wouldn't be able to get it right there for a bit.
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: Maritime on Apr 29, 2019, 09:17:59
SOOOOO, the end of the sagga, I learned one thing. Virago's are a pile of shit LOL. After this post the rear cam seized again, for like the 3rd time, lots of oil in the head, timing was correct. all bolts torqued correctly. replaced it again, then when to fire it up to find the front head had 0 compression. pulled stuff and the front valves, which were in spec when I started working on this bike and I never touched, were super tight?? Head full of oil but after I got it pulled off the bike the cam had worn and rockers had worn so bad the valves couldn't close. So I have swapped a new head on the front, everything is set again to FSM specs. I fired it up, started right up and idled just fine. I shut it off and I am washing my hands of this bike. I will never work on a Virago again, It almost ruined me on working on bikes. I thought they were supposed to be pretty bullet proof bikes but if you google the problems you'll find out hundreds of these things just randomly fuck up like this. Cams seize, valves drop, oil just stops flowing to the heads with no apparent reason. I found all kinds of threads in forums I would not have found just bu searching the bike, only the good stuff comes up. Search a problem and holy crap there's a lot of broken Viragos out there, in the 750-1100 models.
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: pidjones on May 02, 2019, 08:08:15
This is what you get for neglecting the GL! Glad you can now walk away from the Virago. Or can you?
Title: Re: 82 Virago 750 help a buddy get back on the road winter project.
Post by: Maritime on May 02, 2019, 10:36:10
Oh I am, it's out of my life forever. I lost money on this as it was for a friend and I can't keep bleeding out time and money and I won't charge them anymore. They can decide what to do going forward but it is saleable "As is Where is" no test rides LOL.