i want to start a project with my fiance building a forced induction lap. however to minimize downtime on the car i want to build a seperate engine with a tranny from an ss with lsd. can you bolt that tranny to the lap? also where can i find parts for the lap? or will the l61 parts work the same? also im going to be redoing the suspension with ss parts and several aftermarket parts.

 

Why not just buy an SS?

 

its more fun to build stuff than to buy it. however i am also considering buying a wrecked ss to switch the parts from

 

LAP and L61 are essentially the same

2.2 i hear is a good platform for building

 

yeah i was pretty sure the internals were the same just checking. i know the block is completely different though but what about the transmission? will it bolt up?

 

ok im using a saab turbo forged rods and pistons lnf exhaust manifold and cai and h.e since i have the wires for it and putting a lsd in my tranny. thats the plans right now i have 50k on my car now so another year to gather parts and have it done

 

ok heres the new plans... lnf/lsj pistons. with the stock rods. a saab 9-3 turbo lnf exhaust manifold (or is the saab manifold the same?) lnf/lsj intercooler. lnf intake, and a LSD. is there anything you guys can think of i need besides the gauges and a tune?

 

in order to use lsj pistons you need custom rods, and possibly machining the block for clearnce as well. You CAN NOT use LNF pistons. Direct injection requires a diffrent shape to the piston.

I dont think the splines on the input shaft are the same of the lsj/lnf trans. also if u could use it you would need new axels and hubs because of the size and number of splines. I believe that is all correct.

 

The LNF Pistons are intended for Direct injection, don't use them. LSJ pistons should be fine if they are the right bore diameter, i can't remember but i think they are.

LNF exhaust will not work unless you are going turbo, and in that case the LNF intake would be ok, but LSJ intercooler parts won't work.

You do realize the difference between Supercharged, and Turbocharged right?

Which direction are you going? because these parts you have picked out are all mismatched and will not work together.

 

im going turbo and yes i know the difference... its hard to do a very good search on my cell since its the only internet i have really. i know i can use the lsj internals as long as i convert EVERYTHING pretty much... but im not going to do that. according to the build book the bores are the same just different strokes. i thought the lsj and lnf used the same h.e but i was wrong i guess. and also accoding to the build book the stock rods and pistons will hold 350 hp and i know i wont hit that... if i run 10 lbs of boost how long before i need a rebuild? or just a ticking time bomb?

 

Do some serious research bud. Its not how many psi, its volume. A T04Z at 8 psi is pushing a lot more air than aGT2560R at 8 psi. Why not get a set of 9.5:1 pistons/ rods? Good luck getting lsd in it too. I think you should have bought an SS, or at least a Civic or another that has an aftermarket.

 

im using the team green lsd insert. im using a turbo from a saab which is the same as a lnf from my understanding. forged rods and pistons were my original plan but i tried to be cheap which ended in epic fail. do it right do it once. yes i know i should have just bought a ss sedan but... i couldnt afford insurance on it.

 

two many vauge questions

 

Yeah, i'm not gonna lie. your parts list confuses the **** out of me. But if you feel you have done the required research, then by all means, good luck!

 

you can never do enough research. but looking through just about every ecotec based forum ive done a lot. so here are my questions. the turbo is from an lnf along with the exhaust manifold and air intake. will i have to use a lnf intake manifold? or can i use my stock one? i will need the intercooler from an lnf i know. and the downpipe. make sense now?

 

will the b207r/lsj rods bolt to a LAP crankshaft?

 

You cant mix and match all these parts. The only LNF part you can use is the turbo/exh manifold. You cant use LNF pistons or rods, or intake manifold.

I see that youre using a Team Green insert so I assume youve abandoned the F35 trans idea. good call. ($$$$)

If youre replacing the pistons, replace the rods too. No reason to go in there, do all that work and put back one of the weakest links. Eagle 2.2 rods are $350.

If you use LSJ rods (which are not really any cheaper than Eagles) you will need special pistons.

Make sure you get pistons designed for boost. Some companies (Wiseco in particular) the "standard" 2.2 piston they offer is a lightweight piston thats truly designed for NA applications. They dont specify this, but its just the facts. ASK for pistons for boosted application.

And with all that said.....If this was my project and I was buying a spare engine.....I would just buy an LE5. You get 3 bonuses
A: LE5s are cheaper and more readily available than LAPs
B: they have steel rods, so all you need is pistons.
C: its a 2.4L.....duh.

 

ok maven that all makes sense... i will have to look at the build book again but doesnt the the 2.4 and 2.2 have the same stroke meaning the rods are interchangeable? the turbo i found is a b207l its from a saab. will it work? and the low compression wiseco pistons arent for boost?

i can use the lnf air intake and intercooler cant i?

ok im positive the cai will work but... i wont be able to use the lnf turbo to intake pipe since it isnt the same design from the little picture im looking at. so maven... am i going to have to make my own plumbing for all this? what do i do about the oil lines for the turbo?

le5 it is maven i found one with 65k for $500 isnt that pretty cheap? unless someone has a copart account and wants to let me use it to buy a car... im working on buying/finding the team green insert. and the build book says the 2.4 rods are just as weak as the 2.2. im still trying to descide on which turbo im going to run a gt17 a b20 a ko4 or a 2860

 

[QUOTE=09blackonblack;4538846]ok maven that all makes sense... i will have to look at the build book again but doesnt the the 2.4 and 2.2 have the same stroke meaning the rods are interchangeable? the turbo i found is a b207l its from a saab. will it work? and the low compression wiseco pistons arent for boost?[quote]

2.2 and 2.4 dont share any reciprocating parts.
I wouldnt use low compression pistons in a low pressure turbo build. just run stock compression ratio blower pistons.

Yeah, so long as you use an LNF turbo or nealry identical setup(as far as airbox goes) Intercooler you can run whatever you want because unless you run a full LNF turbo/hotside/intercooler setup youre gonna have to make a bunch of custom stuff anyway

Yup, unless you buy all the stock LNF plumbing your gonna have to make your own.

Yup, LE5s are cheap, thats why I mentioned its what I would do. LE5s have stronger rods than the 2.2s. Im not a turbo expert by any means, but I would say as much LNF pieces as you can is gonna make life much easier and give you the possibility to make plenty of power.

 

thanks maven. your my new hero lol. so is that turbo pretty small? i tried finding out the turbine sizes on it but i couldnt. some v6 mustang guys run a turbo from an early 90s cummins. i just dont have the funds to drop a new t3/t4 in it. plus my power goals are pretty reasonable... around 250-300.

nevermind on that turbo i am working a deal for a 16g turbo greddy bov intercooler and the tubing. trading him a set of wheels for all of it.

 

ok my plans are final now. big 16g turbo. 2.4 with forged pistons lsd insert, new clutch since this one is slipping and new axle seals since gm wont warranty them. welded support rods on the lca. now maven heres a question for you... what size fmic should i use?

 

50 trims would get a 2.4 300-320whp just as a reference, your looking at some small turbos

 

well i dont have 1500 just for the turbo so a 50 trim is out of the question

 

for 250hp? basically whatever fits without cutting should be plenty honestly.

I know ZZPs air-water setup would easily handle your power goals and would drastically reduce the complexity of your charge piping fab work. I honestly was never a big fan of them(I am still not), and I have big issues with the way several of their reps act in the community, BUT their products that ive seen have been quality. And no other shop drag races as much as they do.

 

wouldnt it be more effective to use an a2a though? its going on my 2.2 to start with then to a le5 the big 16g seems to be a pretty good turbo on the dsms and wrx besides boost creep which is easily solved with an external wastegate.