Building a stroker motor
 

Greetings! I would like to pick all of your brains with some quick questions. I am looking into building/purchasing an LSJ stroker kit/built stroker motor. I want to run a lot of boost from a fully ported and polished M62 blower and have it as my everyday driver. I am beginning my long list of researching now so I can begin saving for an already built motor, or start buying up all of my components necessary. :) I greatly appreciate all of your help and can't wait to begin buying my new parts.

So what questions do you have for us?

well you can only get 27psi out of the easton m62 thats pushing it thats maxing out so if you wanna go big boost start with the 2.0 bulid it up and than drop a nice turbo on it

Does anyone know where I can purchase a highperformance LSJ crate motor?
Or should I go with a 2.2 stroker with HPTuners tune?

I would like to keep the blower, just because there are many things out there with turbos, but I always have the option or going that way...I would like to make somewhere around 400-500whp. I have recently acquired a new job that pays more than my last and with my good grades in college, my parents are paying for EVERYTHING else...so, I have some money on my hands to accomplish one of my dreams, an 11 second daily driver. :)

If I should go with the stroker motor, do you know where I can purchase a kit? Or will it have to be home made? What size of displacement am I looking for? 2.2, 2.3,2.4,2.5,2.6L? Can't I use the 2.2 bottom end and then bore it out? Will that bolt up to my 2.0 head? And should I go with the GM Performance cams? I lot of people have had great review about them. :) Oh, and as to the 27 psi, won't that "overspin" the blower and cause irreperable damage? I need this to be reliable because I drive a long way to college everyday. Which brings up my last question, can I make 400-500whp reliable? I can change my goal if I have to...

yea man JBP is maked one they can deff hook u up they have like everything kinda pricey tho...its would of our ventors Jbody performance..

400 500 whp i cant really see the m62 makeing that much and yes 27psi well overspin the blower

JBP's "wild" crate engine is not out yet but it is coming soon. The "wild" is actually based off what JBP is doing with my engine. The purpose of the "wild" is to withstand high boost. As mentioned, you likely won't reach your goal with the M62. You would have to look at a turbo or twinscrew swap to make the HP you are looking for. The benifit of going with an already built engine is less down time for your car.
Also be prepared to make a lot of supporting part modifications, so that your whole car will be able to use all 400-500whp.:)

Since the M62 would over spin, what about a whipple or the M90?

Don't aim for a HP number...because in order to make that power it could be not very streetable or w/e...and what BlackyK said, be prepared to build up EVERYTHING.

Can't wait to see your results but I would suggest a turbo set up...there are some turbos that produce little or no lag...

Ok, I won't aim for a horsepower number, I will just build it and see what it produces. All of you guys have given me priceless information for my quest for speed and I deeply thank all of you. Would you guys recommend me going with the HPTuners or another type of program to get the motor tuned?

Oh, going along with a bigger/different type of blower, I would like to stay with a roots type supercharger...so...where do you recommend I purchase an M90 from? Do they make an adapter plate for our manifold? Thanks again! :)

There have been no M90 swaps as the consensus is there is a lack of room for it. Going with a M90 would also require custom fabbing of some parts.
As for the HPTuners, the maximum size injectors our PCM allows for is 64lb injectors. Depending on where your power numbers come in at, you may require even larger injectors. That means either using HPT to trick your PCM or going with a standalone system.

So with 64 pound injectors, what numbers can I expect? And roughly how much boost is that?

ohh wow, lol 64 lb an injectors will just add more fuel lol, if u wanna build a stroker motor, look into a 2.4 block and run a 2.0L head, bore out the 2.4 and you should be runing close to 2.6 L if your lucky than throw a shit load of boost at it :D lol, thats my goal, but i wanna wait till a forged 2.4 crank comes out

I heard that the 2.4 liter block will not bolt up to the 2.0L head? Right? That was my very first plan.

it does, ppl can just mis leading ;), ask MVP your self if u want proof

The hell with building my own stroker motor then!!!! I am going back with the original plan now! Thanks man. Oh, and how do I find this gentleman?

[QUOTE=burntorange;965974]I have some money on my hands to accomplish one of my dreams, an 11 second daily driver. :)
QUOTE]

Get rid of the balt and get an Evo. You wont need a stroker kit to run 11s in those, in fact, you wont need much more than a full exhaust and a reflash

making more power doesnt always mean turning up the boost, JBP will be bumping boost and compression along with aggressive cam profiles, so this much power can be generated while using the M62 IMO, overspinning the blower can be prevented with full exhaust and a conservative rev limit

An important part of this is what kind of car you are going to put it in. If you are putting it in an SS/SC with the P12 ECM, then you can do this.

Building this engine is really the easiest part. I can tell you right now exactly what you need to do, and you could build it tomorrow. But you have to consider tuning.

So, what kind of car?

Unless the OP is like myself then he would need to get rid of two doors. Fast cars with 4 doors are not for everyone, me included.

I got an on topic question. Will the 2.2 crankshaft swap to a 2.0 block and keep the 2.0 reluctor ring and flywheel? I know you can run a 2.2 crank and 2.2 rods and pistons in a 2.0 block, but the other stuff has me guessing now. I'm told one has a 6 bolt crank and the other an 8.

I don't know about the crank stuff for certain. I haven't seen an actual LSJ crank to know if they have more or less bolts. But I would bet you could swap everything necessary without issue. You're right, I'd like to see.

Wait, what the hell am I saying?! This is a Cobalt web site. I gotta be able to find a picture of an LSJ crank around here somewhere. Gimme a sec.

WSFrazier popped piston 4, we were going to do a 2.2 stroker cause he wanted aftermarket forged rods. Redline Dan and a couple others said the reluctor ring for the crank sensor swap but now they say the lsj has 8 bolts to the flywheel and the 2.2 has 6. Never tore a crank off either one so I have no idea.

Well, I found this. It's an 8-bolt, but I really don't have anyway of confirming its actually for the LSJ.
https://www.cobaltss.net/gallery/fil...0/DSCF0216.JPG

Still looking.

Fidanza's catalog does list different part numbers for each engine (even the LE5), so I'm willing to believe there is a difference of 6 or 8 bolts.

However, so what? Put the 6 bolt L61 crank in there, then get an L61 clutch/flex plate assembly for it. Problem solved.

If they are different (I'm sure with our luck they are) how would you go about making them work? 2.2 flywheel and hope it works with the clutch or have to go with an entire clutch swap? Definetly a bigger pain than its worth imo.

Wes told me the guy I bought my cams from has a pic on the redline forums of the 2.0 crank and the 2.4 crank that hes swapping to. I haven't been able to find the thread, I dunno, I'll keep looking to see if I can dig it up.