Lamey Q's

Lakeside518 · 01-20-2010, 06:43 PM

It's looking like I may have DASA Lamey build me a billet stroker engine. Before I take this plunge I need help clearing up some issues I may run into.

Explain the advantage of using PV's vs non PV's on a Lamey stroker engine! I know there is added maintenance having a PV engine. Valve failure? Only experience I have had with Powervalve engines is with snowmobiles. But I never experienced any issues with them. Sold the sleds with less then 1500 miles on them both times that I had ever owned a PV engine.

I'll outline my rough draft for my build.

- Lamey Billet Powervalve engine 90mm bore. Debating between a 74mm or 76mm stroke. Ported and epoxied 64x cases.

- Dual Full Spectrum 49mm carbs with Boyseen stage 3 reeds & intake & riva spacer.

- FPP with mod chamber

- Riva waterbox

- MSD water injection

- Skat Mag pump 144mm 12 vein with Impro's Hooker setback impeller. Pitch unsure yet.

- Advent T3 programmable ignition with remote switch (Will this be safe to use with this engine? I'd rather not go MSD total loss)

- Thrust innovations Trim kit

This engine will be built mainly for freeride but I would also use it for running Bouys.

Whats involved in Modding the pipe for clearance with PV's??? This is my main concern right now! Which is prolly pretty insignificant compaired to the rest of the build.

Scottie Mac · 01-20-2010, 10:36 PM

As long as you use good oil, PVs are no issues. We have or have had 4 different PV motors and never has any of them had a valve issue.

The longer the stroke, the less stress there will be on the skirts of the pistons, but the piston speed increases.

You will need to bore out the cases as well. Plus, understand, there is as much power to be had in the cases as in the cylinder. The greatest top end in the world is only as good as the bottom end that is feeding it.

To run the B mod, you will have to have the headpipe cut and welded to clear the PVs. Xscream uses a different designed bellow with their set ups that supposedly you don't have to mod the headpipe.

If you go with the 6 or 8mil, the cylinder and the exhaust mani will be higher, a lot of times this causes clearance issues where the headpipe/chamber coupler is. If it were me, I would use a stock stroke and go 90mm, the power will be huge compared to what you are used to and you won't have to worry about stroker cranks, gouging your cases to clear the crank, etc.

A B-mod pipe will work great for bottom and mid, but if you want the big top end revs, you need a dry pipe. The only one that will clear the PVs and fit in the hull without MAJOR issues is the Factory Blaster high rev/octane pipe. (worth 350rpms over a B mod)

It takes a lot longer to port the billet jugs than it does to do cast ones, you might want to factor this into the cost of the build.

A stroker PV motor is a bad mutha when it comes to power, but I wouldn't be holding it wide f'n open from one end of the lake to the other. But, as fast and powerful as they are, the best thing is, you will be more interested in freeriding and playin in the waves anyway.

To be honest, I think this will be a bit much in the surf, but to each his own. You might also want to look into Xscreams top end kit. They make one that goes from the 820cc area up to 1000ccs. Either way, don't think you will be disappointed.

Scottie

Water Worx · 01-20-2010, 10:39 PM

I think Lees Lamey motor is for sale ?

godocgo · 01-20-2010, 11:03 PM

thanks dan

everyone thinks these motors are so cheap to build. i am giving mine away for less than the parts cost.

lakeside just be aware that lameys do not come ported, the new billet one needs alot of work just to get to where the cast version started ( told to me from a engine builder who just built one). your also loosing 2 transfer ports compared to the cast version or xscreams version (big loss of power). boring your cases for the stroker crank is 400 from dasa just to fit the crank, that does not include any case porting or boring to fit those big sleeves.

just more food for thought to help mess up your thoughts more : )

you also can't run such a restrictive waterbox with such a big motor. your killing it's breathing ability.
the pipe your wanting is designed for a much smaller cc than a 1000cc's. sure the b-pipe will work, but your only getting 2/3 of the motor that way. why do you think baxter made the powerfactor pipe. those big *** motors needed a big pipe like the octane or type 9 pipes.

i am with scott on this one, your wanting way to much motor for the surf.

i disagree with scott on one thing : ) i ran the b pipe back to back with the octane dry pipe. octane pipe made 500 more rpm's and 4.5 mph on the exact same boat and engine.

Lakeside518 · 01-20-2010, 11:12 PM

Yeah Lee's engine is for sale. Which would be perfect for racing sport Mod but I want more displacement. Sure I could go the 951 route but I'm pretty set on a Lamey stroker. I really want to buy a badass turn key stroker. I can go either way. Pump gas or Race gas. I'm sure Lamey can build a reliable engine either way. I'm not sure if the Billet cylinder comes ported or not I know in our discussion that the cases would be epoxied, ported and clearanced for the 90mm bore. The engine would be crate shipped to me.

All I would need to do is install my flywheel, starter, bendix, time it, install the full spectrums, reeds, manifold, engine and fit the pipe. Figure out how to setup the timing for the Advent and break it in without breaking it. lol

So I should prolly send the head pipe out with my cases to Lamey for the build. I don't want to mess with the clearance issue!

Thanks for all the suggestions and help. After riding your #4 boat I was pretty hooked on the acceleration of a stroker.

Not sure if Lee is willing to sell the Octane dry pipe untill the engine sells. I'd have to ask him.

I'm looking to be around 930-960cc

Edit... Not cheap I know Never said they were.. I'll be in 8 grand on this build easily I'm sure.

Lakeside518 · 01-20-2010, 11:17 PM

The ski most likely won't even see surf. I ride the great lakes once in awhile but other then that mostly smaller mountain lakes. I'm just on a go big or go home kick lately. I could always drop the CC's down to around the Mid 800's. Just trying to bounce some ideas around right now before I throw cash around and hate the monster I bought.

I thought the billet cylinder had 7 transfer ports? I don't have any plans on porting the cylinder just the cases for now. Depending on price. Next time I call Lamey I'll see how much their cylinder porting is.

Scottie Mac · 01-20-2010, 11:35 PM

If you are willing to spend that much, I would buy Lee's have him send it to TJ and bore out to 88mm bore. The version of the lamey he and I have has a ton of overbores in it. The sleeves are a half inch thick. That would make 900plus ccs and kill anything you are going to get from Lamey. No offense to Lamey at all, but you can't get the power our skis have on a non ported cylinder. Tj is the best, period. It wouldn't cost much to have it torn down, bored and new pistons. A lot less than 8K.

Just my opinion.

Scottie

godocgo · 01-20-2010, 11:44 PM

no worries scott

i sent him a pm with the info you and i know about those big 1000 cc;s motors with a b pipe in a blaster.

i also told him he could have lamey build him a big 1000 cc motor, riva box and b pipe. if it beat mine i would give him my other carbon
hull free. just so it is public knowlegde, that is how sure i am of my motor.

bbigfish · 01-21-2010, 12:10 AM

Lee's motor / pipe set up would have more power and cost less than going "big".

MM

joesuperjet · 01-21-2010, 01:02 AM

You would be WAY better off buying Lee's engine that building one of those "Big Bore" engines. Plus you would be legal for sport mod. This is not meant as a shot at anyone so please don't take it personally, but If you were to build an engine like you listed above - I would bet good money my 8mm would rape it on the course. You can't go wrong with Lee's package. It's bullet proof and proven to have the muscle to win championships. (And it's cheaper) Pretty easy choice in my mind................

JAM