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Author Topic: PE175 VMX  (Read 8907 times)

Offline MickyC

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Re: PE175 VMX
« Reply #30 on: Jul 23, 2018, 21:22:03 »
When I was working at Suzuki dealers we used to re-profile the reed stops to a (I think, can't remember) 8" or 10" diameter and about 50% more 'lift'.(just about touching case radius)  o need to polish contact area with at least 600 grit afterwards.  Make sure angle of port and reed block all match up. PE175 was first bike I ever managed a 'tail whip' on, my Yamaha 400 was way too heavy to learn on (plus I broke rear suspension trying  ;D ) I don't like thinking about it too much though, makes me feel real old (almost 40 yrs ago  :( )
hahahaha
Thanks for the advice mate will do


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Offline MickyC

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Re: PE175 VMX
« Reply #31 on: Aug 26, 2018, 07:08:44 »
Engine is been rebuilt and is at the painters. Forgot to take pics sorry. Found the only 79 63.5 oversize piston in the world apparently and we are back in business. Also bought my baby a new heart.


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Offline MickyC

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Re: PE175 VMX
« Reply #32 on: Sep 08, 2018, 00:30:20 »
So a bit done. Engine back together painted and in. Bike re assembled and running. Now off to get tuned.


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Offline MickyC

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Re: PE175 VMX
« Reply #33 on: Oct 27, 2018, 07:37:26 »
So after taking her out for a test run she revved out in first gear and hit ban. But then second third it feels like it is under load and not reving out. Any help?


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Offline MickyC

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Re: PE175 VMX
« Reply #34 on: Oct 28, 2018, 08:39:54 »
I think perhaps my reeds came of a different bike too anyone know there reeds?


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Offline crazypj

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Re: PE175 VMX
« Reply #35 on: Oct 29, 2018, 08:41:14 »
I think I mentioned a while ago, re-curve reed stops to get more lift and open up slots in block if needed. RM125 reed block is probably fitted, probably easier to get hold of. Reed stops are probably in the 8-10 mm lift range? Almost certain RM 250 fits but it's just too long ago for me to remember. I may not have worked on one since about 1981~82? When you get reed stops off check for match with cylinder base and re-profile for a smooth transition (didn't you already do that?)
« Last Edit: Oct 29, 2018, 08:42:53 by crazypj »
'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 MickyC

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Re: PE175 VMX
« Reply #36 on: Oct 29, 2018, 14:28:37 »
Ok that makes a bit more sense. I think I’ll look at a stock replacement then. No I got the 175 reeds saw they where different so left the original ones on.


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Offline crazypj

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Re: PE175 VMX
« Reply #37 on: Oct 29, 2018, 21:53:50 »
Personally always preferred the case reed induction on Suzuki's to the full reed on Yamaha's, did alot of work on RM's back in the day (working at Suzuki dealers I guess I would  ;) )
'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 XS750AU

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Re: PE175 VMX
« Reply #38 on: Oct 29, 2018, 22:12:38 »
Personally, I recon the PE's were the best looking bike of their time.
I have an IT200, which is a great bike but the PE's in my opinion look much better.
Great bike, hope you get her screaming soon.
“Engineering is the art of being approximately right rather than exactly wrong.”

Yamaha XS750-2D
Yamaha XS896
Husaberg FE550
Yamaha TT250
Yamaha IT200N

Online irk miller

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Re: PE175 VMX
« Reply #39 on: Oct 30, 2018, 11:50:31 »
Yep, I have a DR370 that I have a mind to decking out like a PE.