2.9 build. (long and slow)

[Liv3mind]

this will be a fairly slow 2.9 build as kids and work can keep from work. so i finally tore down my spare m20 block and have finished compiling parts for my stroker build (except for the pistons being ordered next week) the head was dropped off today for a good port/polish and an install of +1mm intake valves. the block i will be cleaning and painting and re freezeplugging this weekend. hopefully next weekend i can start building my wires for my msd wasted spark setup. The car will be on e85. i will post pics as i go. i will be running this setup:

m52b28 crank - have
135mm rods- have
13:1 custom pistons 85mm bore - need
+1mm intake valves - need
head work (cleanup/port and polish) - being done
arp everywhere - have
304*ish cam - still undecided
aem 320lph in tank pump - have
msd v6 mustang wasted spark setup - have and building
megasquirt - have
42lb injectors (obviously e85 compatable) - have


thats all i can think of for now. here are some pics of my car. more to come. feel free to pitch ideas and/or criticism. I have no power goals or expectations. il make however much i do when its done and tuned. also if anyone cares specs on wheels are 15x10 0 offset diamond racing.

[AlphaE]

304 cam?? thats alot open.. nice. E85 can make some power for sure. But you needs TONS of it.. have fun w build!!

[dougie30]

Pumped to see finished product!

[digger]

will need a custom intake fannymold to avoid pissing into the wind and dont cheap out on the header

[Liv3mind]

can anyone give some insight into possibly using m42 140mm rods as apposed to m20 135mm rods will do? it is more of an ideal ratio to use the longer rod no? what will this do for the power range of the engine (ie making power to factory rev limiter)?

[Liv3mind]

Pumped to see finished product!

yah im pretty jazzed meeself

will need a custom intake fannymold to avoid pissing into the wind and dont cheap out on the header

yah, i dont plan on skimping out, as soon as the return gets here i am planning on either ordering the entire extrudabody itb kit in 40mm or just buying the itb manifolds and running silvertop 4age 38mm tbs. anything above 40mm flows way way to much for my purposes. as far as exhaust im hoping il find it in my budget to head down to rpm in Oceanside and have Rich build me up a decent long tube header for a few cases of brew and some coin. or just order up a schmiedmann ;)

[craiggroves91]

Out of curiousity why not go 24v?

Not dogging on you for wanting to build an m20, just curious!

Will be interesting to see how much power you make, GL!

[Liv3mind]

Out of curiousity why not go 24v?

Not dogging on you for wanting to build an m20, just curious!

Will be interesting to see how much power you make, GL!

no offense taken at all. i very well may 24v swap it later, there are two main reasons for choosing to build this engine.

1. at this point in my car owning mentality i feel like if i don't build the engine that's in it originally then i may as well have just saved a little more and bought a e36, which i didn't want.

2. i see alot of stroker builds go together and make very minimal power gains, i feel i understand why but for some ill fated reason i still want to give it a run myself. which is why i refuse to get my hopes up with power expectations haha

for me its just about proving to myself that i can make a decent project come together, because i have been patient i have gotten pretty sweet deals on everything thusfar. the beauty of the whole situation is if i am not satisfied with the power of the car i can sell off a lot of the parts/engine and 24v swap anyways and i will walk away with what i feel is invaluable knowledge gained, for me its not just about the money.

[JasonC]

The mechanical aspect of this sounds cool. The looks department not so much though..

[digger]

can anyone give some insight into possibly using m42 140mm rods as apposed to m20 135mm rods will do? it is more of an ideal ratio to use the longer rod no? what will this do for the power range of the engine (ie making power to factory rev limiter)?

longer rods wont do anything for performance that is worth considering in all honesty. The reason being that apart from the exhaust the pull on the port and intake comes from the piston motion (velocity) and if you compare the velocity with a 135mm rod vs 140mm rod you'd be hard pressed to see any difference. if you want to pull hard on the port use a longer stroke or bigger bore then you'll make a difference.

you might consider longer rods if the rod ratio was such that longevity would suffer due to the angle of the rod sideways into the cylinder causing instability and extra wear or if the piston skirt would come too far out of the bottom of the bore and be unsupported at BDC but given many have use a longer stroke with 135mm rods you needn't worry about the length too much....

http://www.youtube.com/watch?v=CCd4jF-WqVY&list=UUouyFpZNZFz5RFpEg0Pc19w&index=14

[monsterm20]

13:1! Dang son. That's going to be bitchin. I bet with your parts combo you got this is going to be a nasty machine. AWESOME! can't wat to see er done. Will the drivability be bad though? Sounds like this thing is going to love living at high rpms!

[Liv3mind]

longer rods wont do anything for performance that is worth considering in all honesty. The reason being that apart from the exhaust the pull on the port and intake comes from the piston motion (velocity) and if you compare the velocity with a 135mm rod vs 140mm rod you'd be hard pressed to see any difference. if you want to pull hard on the port use a longer stroke or bigger bore then you'll make a difference.

you might consider longer rods if the rod ratio was such that longevity would suffer due to the angle of the rod sideways into the cylinder causing instability and extra wear or if the piston skirt would come too far out of the bottom of the bore and be unsupported at BDC but given many have use a longer stroke with 135mm rods you needn't worry about the length too much....

http://www.youtube.com/watch?v=CCd4j...Pc19w&index=14

that video was very informative and thanks for the info, i appreciate it

[Liv3mind]

13:1! Dang son. That's going to be bitchin. I bet with your parts combo you got this is going to be a nasty machine. AWESOME! can't wat to see er done. Will the drivability be bad though? Sounds like this thing is going to love living at high rpms!

im excited as well. im not too concerned with drivability because she isnt my daily, it should be wild and above 4k this engine is gonna scream murder. im droping the block off tomorrow to be checked for tolerances/wear/etc and to be tanked, its a dirty mess. someday after the engine is done il start on the body. also forgot to mention im thinking 6 speed may be in order with a 3.25lsd? my 4.10 will be way too much

[ToPLeSS(e30)FeinD]

haha, 6 speed.. i swear.

where/how much did u find 13:1 pistons?! i'm doing a 2.8 with the 'i' pistons but i'm not expecting more then 9:1 with the same crank..

interested to see where this goes further down the road. a lot of controversial topics between our two builds..

[monsterm20]

I wish I was you. With a 6 speed your car will be insane. The diff between a 5 and a 6 is night and day. Your going to have to post a vid with good sound so I can hear this beast.