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Author Topic: Two Stroke Cylinder Boring  (Read 1860 times)

Offline johnu

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Two Stroke Cylinder Boring
« on: Sep 19, 2016, 23:50:14 »
Ok peeps it's been a while but I'm finally getting back to working on the T500.  I never did get it running properly so I am going to go through the engine again.  I am going to rebore it while I'm at it as I never did get it done when I rebuilt it.  I have the new pistons so I might as well do it.  Big question is where to get it bored.  There are no shops local to me here in SoCal that I know of so I am looking at Millenium to do it for me.  However it is $165 per cylinder :o  Seems a bit steep to me but is that the going rate?  If any of you have other suggestions I'm listening ;D

Offline jimmer

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Re: Two Stroke Cylinder Boring
« Reply #1 on: Sep 20, 2016, 00:03:06 »
Can't help you on the Ca. bore job, but I need to know more about your T500. Link?
Yamaha Blaster Bike                                                                  Suzuki T500 Titan Twingle

Offline teazer

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Re: Two Stroke Cylinder Boring
« Reply #2 on: Sep 20, 2016, 00:40:45 »
Look for an auto engine machine shop or ship them to SCR Scott Clough or Chuck Quenzler in Clearwater FL.  There's a bike shop in WI I use now that has a focus on old bikes.

Anywhere that does work for Banshees, should be suitable.  Go out to Glamis and hang out.  Someone has to have a recommendation.

Offline alzcbz

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Re: Two Stroke Cylinder Boring
« Reply #3 on: Sep 20, 2016, 06:32:05 »
I've used Millenium in the past for my quad motor, TRX250R. It was roughly $150, so the price they quoted seems on par with what they charge. No complaints about their service either.
73 CL350 Hardtail somethin turned into café
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Offline johnu

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Re: Two Stroke Cylinder Boring
« Reply #4 on: Sep 20, 2016, 11:01:38 »
Can't help you on the Ca. bore job, but I need to know more about your T500. Link?
http://www.dotheton.com/forum/index.php?topic=20290.msg209437#msg209437
 It's a long read ;D

Offline teazer

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Re: Two Stroke Cylinder Boring
« Reply #5 on: Sep 20, 2016, 14:30:48 »
I would use Millennium in a heart beat to replate TZ cylinders but that seems a bit high for a simple bore and hone.

Online Hurco550

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Re: Two Stroke Cylinder Boring
« Reply #6 on: Sep 20, 2016, 14:34:42 »
Been using mototechusa in Mansfield Ohio. Bore, sunnin hone and port chamfer for $35 a hole. You could afford to ship them there for that price. I've used him personally several times and was always pleased with his work
"If you just picked up a drug habbit instead of a kawasaki triple at least you could get high while you waste money"
~ bradj
1988 tw200, the swamp donkey: http://www.dotheton.com/forum/index.php?topic=75455.0
2006 Suzuki DR650 Adventure monowheel trailer build: http://www.dotheton.com/forum/index.php?topic=75033.0
1976 BMW R90/6 farkilitious: http://www.dotheton.com/forum/index.php?topic=74349.msg882477#msg882477
1975 RD350 Road Racer: http://www.dotheton.com/forum/index.php?topic=70652.msg833688#msg833688
1976 GT250 Rebuild: http://www.dotheton.com/forum/index.php?topic=64973.new#new
Full Custom Pit Bike: http://www.dotheton.com/forum/index.php?topic=66954.new#new
1971 Yamaha 90cc twin HS1: http://www.dotheton.com/forum/index.php?topic=70498.0
"much ingenuity with a little money is more profitable and amusing than much money without ingenuity" - Arnold Bennet

Offline Garc

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Re: Two Stroke Cylinder Boring
« Reply #7 on: Sep 20, 2016, 15:01:15 »
U.S. Chrome in Wisco does a nice job for my big bore triple snowmobile engines as well. Gotta pay to play, especially with NiCaSiL
« Last Edit: Sep 20, 2016, 15:02:54 by Garc »
XS 750/850 Triple Shaftjacker

Offline johnu

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Re: Two Stroke Cylinder Boring
« Reply #8 on: Sep 20, 2016, 15:18:45 »
Been using mototechusa in Mansfield Ohio. Bore, sunnin hone and port chamfer for $35 a hole. You could afford to ship them there for that price. I've used him personally several times and was always pleased with his work
I will contact them, thanks!

Online Hurco550

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Re: Two Stroke Cylinder Boring
« Reply #9 on: Sep 20, 2016, 15:32:31 »
I will contact them, thanks!


Call and talk to Chris. He is a good dude. Pretty much a one man show
"If you just picked up a drug habbit instead of a kawasaki triple at least you could get high while you waste money"
~ bradj
1988 tw200, the swamp donkey: http://www.dotheton.com/forum/index.php?topic=75455.0
2006 Suzuki DR650 Adventure monowheel trailer build: http://www.dotheton.com/forum/index.php?topic=75033.0
1976 BMW R90/6 farkilitious: http://www.dotheton.com/forum/index.php?topic=74349.msg882477#msg882477
1975 RD350 Road Racer: http://www.dotheton.com/forum/index.php?topic=70652.msg833688#msg833688
1976 GT250 Rebuild: http://www.dotheton.com/forum/index.php?topic=64973.new#new
Full Custom Pit Bike: http://www.dotheton.com/forum/index.php?topic=66954.new#new
1971 Yamaha 90cc twin HS1: http://www.dotheton.com/forum/index.php?topic=70498.0
"much ingenuity with a little money is more profitable and amusing than much money without ingenuity" - Arnold Bennet

Offline johnu

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Re: Two Stroke Cylinder Boring
« Reply #10 on: Sep 20, 2016, 16:02:58 »
Ok Hurco thanks!
I just got a quote from US Chrome too and it is $75 per cylinder which I thought was pretty fair!

Offline clem

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Re: Two Stroke Cylinder Boring
« Reply #11 on: Sep 20, 2016, 16:11:25 »
Bore tech does a lot of vintage racing stuff. They are also $75 per hole. As soon as I receive my pistons I am sending them mine.

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"After every war there are soldiers who refuse to surrender. To this day there are still thousands who cling to their 30+ year old motorcycles, thinking that the war is still on, refusing to concede that the four-strokes have won"

1972 DS7 http://www.dotheton.com/forum/index.php?topic=45886.msg505995#msg505995
1983 CB550sc bobber http://www.dotheton.com/forum/index.php?topic=30599.30

Offline jimmer

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Re: Two Stroke Cylinder Boring
« Reply #12 on: Sep 20, 2016, 20:09:46 »
johnu, thanks for the exhausting link! Very sharp bike! How well does it snort?
Yamaha Blaster Bike                                                                  Suzuki T500 Titan Twingle

Offline johnu

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Re: Two Stroke Cylinder Boring
« Reply #13 on: Sep 20, 2016, 21:22:14 »
johnu, thanks for the exhausting link! Very sharp bike! How well does it snort?
Working on that right now.  Had a ton of problems with carburation, actually I think I have some sort of air leak.  I have ridden it though and she's definitely a snorter!  Supposed to have about 55hp according to the guy that did the porting.

Offline crazypj

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Re: Two Stroke Cylinder Boring
« Reply #14 on: Sep 25, 2016, 04:33:12 »
I would use Millennium in a heart beat to replate TZ cylinders but that seems a bit high for a simple bore and hone.

I agree, bet the price is up there to prevent people having cylinders bored or they ship them somewhere else to have done??
 Should be able to get both of them done for that price.
 Two strokes are a little different compared to a fourstroke, the ports rarely cause an issue boring  but honing needs some special equipment on larger bore sizes with large ports so the stones don't twist or get caught and break something even more expensive. Even so, I think I would want them gold plated if I was paying $330.00 for a pair to nbe bored Probably plus tax and shipping on top?)
'you can take my word for it or argue until you find out I'm right'
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"yep, PJ's my boss, he taught me everything I know, just didn't teach me everything he knows"
Brian Morgan, 1982

CB360's,  http://www.dotheton.com/forum/index.php?topic=11736.0
XS650,  http://www.dotheton.com/forum/index.php?topic=11922.0

Offline johnu

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Re: Two Stroke Cylinder Boring
« Reply #15 on: Sep 25, 2016, 12:40:18 »
Crazy, I'm going with US Chrome at $75 per bore :)

Offline crazypj

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Re: Two Stroke Cylinder Boring
« Reply #16 on: Sep 25, 2016, 15:02:27 »
That's way more sensible pricing  ;) 8)
'you can take my word for it or argue until you find out I'm right'
Best thing I ever overheard
"yep, PJ's my boss, he taught me everything I know, just didn't teach me everything he knows"
Brian Morgan, 1982

CB360's,  http://www.dotheton.com/forum/index.php?topic=11736.0
XS650,  http://www.dotheton.com/forum/index.php?topic=11922.0

Offline MMVEC

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Re: Two Stroke Cylinder Boring
« Reply #17 on: Mar 04, 2017, 11:23:34 »
I agree, bet the price is up there to prevent people having cylinders bored or they ship them somewhere else to have done??
 Should be able to get both of them done for that price.
 Two strokes are a little different compared to a fourstroke, the ports rarely cause an issue boring  but honing needs some special equipment on larger bore sizes with large ports so the stones don't twist or get caught and break something even more expensive. Even so, I think I would want them gold plated if I was paying $330.00 for a pair to nbe bored Probably plus tax and shipping on top?)
I own a 1973 Titan T500.  Had the engine completely rebuilt.  There's a great shop in Quebec Canada or you can try a place in the U.S by the name of Miller if my memory serves me right.  Had the cylinders honed and slightly bored.  Used only Suzuki NOS  parts.  Replaced the pistons,  rings etc as well as replaced all three crank seals.  Crank was machined and balanced.  It wasn't cheap between the machine work and the replacement parts but by that point I was committed..lol...in the end, totally worth the trouble.  Rebuilt the carbs.  Replaced the oil injection cable.  Dialed in the carbs.  Bike runs better than new--blast to ride!  Hope this helps--there aren't many of these left! Here's a before and after of mine below.  Good luck!!



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Offline cxman

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Re: Two Stroke Cylinder Boring
« Reply #18 on: Mar 04, 2017, 14:37:46 »
contact craig at http://www.kickstart-garage.com/ and ask him where to get it done

1978 CX650 Super Deluxe
1979 XS1100 Special
1974 xl350
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1973 cb750
1980 cb750
1981 cb650
1982 cb900 c
1974 kawasaki 350 bighorn
1983 GL1100 aspy full dress
1983 GL1100 Nekid
and a bunch of others