IE Stroker Kit vs S50

[TexasTerp]

First I need to find a new shell to start building on. I'm pretty close to figuring out what I'll be running. I want to build a 2.7l stroker (seta pistons) and I'm considering putting together a DASC style system running an Eaton M62 at 7psi, 24# injectors, BavAuto or Ebay Headers, M42 Radiator, Volvo E-Fan with 10" electric puller fan in front of the ac condenser. Overall that setup should give me about 240whp which is the range I'm aiming for. The biggest issue is that I'll need to custom fabricate a manifold for the DASC setup on an m20 but I think I have a line on that. I'll be running a Haltech stand alone system, there's a shop down the street and the guy's a certified Haltech instructor so I'm going to him. I'll have an eco tune, street tune and a race tune to switch between. I'm still considering a turbo setup since it'll be easier to put together and control boost output but I like the supercharger setup better imo. overall I wont need more than 250whp because I still want the engine to last. I figure if I can make my current m20 last 22yrs and 300k miles then I'll find a way to make my boosted m20 last 150k miles.

[dr.gonzo]

Well it sounds like the consensus is the s50/2 hands down. I'm still in the midst of a lot of research for both engines. plus I'll still have to acquire an s52 engine and all the extra parts needed just for the basic swap (e21 booster etc etc). One of the main reasons I was interested in the stroker is because I was going to do a 2.7 and happened upon the IE kit, I've also been witness to a few m50 swaps in my area lately and they have had nothing but problems, I don't do anything half assed but I would be doing the swap myself.



I would be building the ITB system using motorcycle throttles as I've seen some people do here.



it was late, I should clarify, I'm 24, my dad bought the car off the lot in 1987 (still have the original contract) and I've been working on this car since I was able to hold a wrench. 280k on the original engine!





Well according to what I've been told by IE (I emailed them), the kit is a direct replacement and is supposed to make 240hp without any other modifications other than machining the block for the over sized pistons. They recommend a better cam but larger valves aren't necessary.

Both setups would leave me with the option of boosting, but I'm not that interested since this is my daily.



If I decided on the S50 I would end up doing a major rebuild on the engine. I don't trust just throwing it into the car. So that means new gaskets, machining, pumps, injectors, etc, etc. there's another 2k at least added to the parts budget.



You're the person I need to talk to then, what were the factors that made your decision to go with the S52?



5k is just my parts budget, tuning and everything else if already accounted for and on top of the 5k. My original post already addresses many of the other aspects (fuel injectors, cooling etc) within my budget. I have seen a couple s50 swaps in person and along with the m50 swaps all I've heard is people have problems. this may be because of the quality of the swap or for whatever reason, but all I've heard for the past months with friends doing these swaps are people have been having way to many troubles with the engines themselves.



2.7 and 3.1L strokers are miles apart. I have the ability to build a 2.7 seta stroker for far less than 8k. I would absolutely expect the S52 to leave the 2.7 in the dust. There's no comparison.

If you are looking to do a bike ITB set up i suggest you look over on miatas.net or clubroadster.net tons of guys do them with great success.

[bimma360]

a seta bottom end with an i head has the seta CR because they both use the same head, the difference is the cam and valve springs.

Thanks for clearing that up... learn something new everyday i guess. Its crazy... i've been reading this info for almost the last 10 years and i still got it mixed up.

Dave

[SpecM]

a seta bottom end with an i head has the seta CR because they both use the same head, the difference is the cam and valve springs.

which is 8.5:1, just to be clear