lamey cylinder

[norcal ex]

I am seriously considering a lamey cylinder. I want to keep it stock stroke for simplicity and costs. I also want to keep it domed because i don't really like running flattop pistons. My question is this

Who has rode or ran a stock stroke domed power valve lamey, and what did you think of it? Did the power valves make a huge difference?

 

[RiverRat]

I have a stock stroke (flat top) lamey PV motor in my X-jet.......but I have run that motor in stock hull for 1/2 the season. I personally like the powerband on the PV cylinder. It seems to smooth out the powerband throughout the rpms. However, mine is not ported for freestyle. I bought this one used and it came ported for mid to top end power. That being said it comes on like a light switch when the pipe hits. Non-pv cylinders I have been on seem to have that good initail hit, then level off a bit, then pick back up. My impression of the pv is that the power steadily builds with the sacrafice of that initial low rpm hit (unless it is stroked, then I think the torque makes up for it a bit)

If doing a lamey I also reccomend some big 48mm carbs.

 

[norcal ex]

Im not a fan of big carbs for stock stroke applications.

So overall, are the PVs worth the extra 1k? unported lamey PV is 2500 after bipipe mod. i think non PV is 1500....much cheaper.

 

[RiverRat]

Im not a fan of big carbs for stock stroke applications.

So overall, are the PVs worth the extra 1k? unported lamey PV is 2500 after bipipe mod. i think non PV is 1500....much cheaper.

I would have to say no......maybe for racing

 

[norcal ex]

thats what i was thinking....im going to call lamey monday and discuss a few things with them then i think i might place an order...hmmm

 

[SuperJETT]

My LPW 760 has been as strong as the majority of stock stroke Lamey's I've ridden recently in terms of freestyle power. I think it's just that I have a very good complete package where some of the other skis had some things that didn't quite work with the combination.

 

[norcal ex]

yep, the complete package makes a huge difference!

 

[freestylegeek]

My LPW 760 has been as strong as the majority of stock stroke Lamey's I've ridden recently in terms of freestyle power. I think it's just that I have a very good complete package where some of the other skis had some things that didn't quite work with the combination.

With the wrong ignition/carbs/pipe set-up, you can eliminate any power gain from a well built motor. If you're going to do a stock stroke Lamey, PLAN it as a complete package. Spend time talking to Chuckie (Team Scream) or other engine builders with experience building Lamey packages.

 

[norcal ex]

I already have everything to make it a complete package and i have buddies who run stock stroke domed lameys, i just wanted to know if power valves were worth the extra 1k.

 

[geraban19]

I already have everything to make it a complete package and i have buddies who run stock stroke domed lameys, i just wanted to know if power valves were worth the extra 1k.

Norcal,
Dont be afraid about flat top pistons... with Lameys U can run regular wisecos for Kaw.. U dont need the Riva/R&D expensive pistons.

Trust me... NON PV, STOCK STROKE, POWER BOMB or FULL SPEC's (I do dual's but... go single if U want), ADA HEAD, MSD TL (better than ENHANCER) BPIPE or other good DRY PIPE (I am very happy with the combination with SPEEDWERX).

Just a 1/4 cent.

Gera

 

[Superjet3]

Lamey's are over rated. They were designed for high reving racing motors. Just go with a big bore 61x.

 

[geraban19]

Lamey's are over rated. They were designed for high reving racing motors. Just go with a big bore 61x.

Sorry, I can't agree with U.

I have tried SRE's big bores, TLR, and anyone are like a DASA/R&D casted cyl... I am not saying LAMEY is the only builder... I am talking about the CASTED JUG. I can't forget to mention that PAUL LEHR port job can be a lot better than a Lamey port.... I never tried but I did hear some about it.

I have a 6mm old mod class motor that has sick power but can't compare to a DASA/8mm.

Gera

 

[norcal ex]

Lamey's are over rated. They were designed for high reving racing motors. Just go with a big bore 61x.

I cant agree with you either, i have ridden many skis and port jobs, non ported lamey kick ass!

 

[sjweber]

My LPW 760 has been as strong as the majority of stock stroke Lamey's I've ridden recently in terms of freestyle power. I think it's just that I have a very good complete package where some of the other skis had some things that didn't quite work with the combination.

Yep you're set up now is super strong.:hail:
I know I have not ridden you're ski very much but the recent ride was awsome.
If I do another motor mod it will be a LPW 760. :woot:

 

[Idok]

just curious...didnt you just get rid of a bunch of 66e stuff? thats 110hp STOCK

im sure you could figure a way to get it mounted into a SJ>..

 

[norcal ex]

I still have the 66e stuff, but i would rather not toy with it. i need an engine for world finals ASAP! btw...that stuff is still for sale.

 

[RiverRat]

just curious...didnt you just get rid of a bunch of 66e stuff? thats 110hp STOCK

im sure you could figure a way to get it mounted into a SJ>..

Correction 120hp stock. Do some full specs, pipe and TL...........:brap:

 

[FL-cracker]

^^^^^Dont forget extra reinforcement for the extra 20+lbs that you will have bolted to your lower:biggrin:

How many hours are people actually getting out of a Mod 66e motor? I heard thery eat cranks on a stock motor?

 

[THRUST]

they eat valves on the stock motors . the valve pins break and they drop in the cylinder and munch munch . plus the load of a sj versus a gp800 hull or xlt little bit lighter .

 

[RiverRat]

^^^^^Dont forget extra reinforcement for the extra 20+lbs that you will have bolted to your lower:biggrin:

How many hours are people actually getting out of a Mod 66e motor? I heard thery eat cranks on a stock motor?

The 66e has bwen plagued with PV problems since the beginning. However, if you do groupK bigbore motor the PV's are perminatly locked in the up right position. With the larger bore (87mm) the PV's achually hinder low end power b/c PV's only work w/in a certain range. This mod elimiates the threat of a PV failure and punches the motor out to about 927cc's. A modded motor should run for a long time b/c it will just have a larger bore and about 165lbs compression. Both the crank and bearings on the gp's crank are massive!!! I would not be worried about toasting one of those anytime soon unless you are doing allot of subs. The gp makes that 120hp on 120lbs compression............the fact that it has 178mm of stroke is quite nice as well.:bigeyes:. Add the performance upgrades of MSD TL, 87mm BigBore Kit, larger 48-49mm carbs, higher compression and a pipe :brap: Take a look at the specs on Malones boat.............the gp mimics his 1000 using stock Yamaha parts