6G Celicas Forums

I'm in the process of designing a 2.2 stroker motor for a 'Four, and have made some part choices already. I'm hoping to start building the engine early (Q1) next year, so this is really just the R&D/planning stage. What I've chosen for the internals so far is as follows;

JUN custom stroker kit (Pistons & 17Kg crank. PN 1029M-T001)
JE Forged pistons @ 86mm bore for 3SGTE (PN 298701)
Eagle forged H-Beam 138mm rods (PN CRS5428T3D)

My question about these is whether or not the JE pistons will work with the rods and crank that I've chosen. I read somewhere (on alltrac.net I believe) not too long ago that the pistons supplied with stroker kits are actually stroker pistons, with the wrist pin slightly higher in the piston so that it doesn't extend past the deck on the block and crash into the valves. I'd like to have the option of using the JE pistons instead of the JUN kit supplied Cosworth ones, then sell whichever set I don't use - but are the JE pistons manufactured to accommodate a stroker crank?

As far as the rest of the parts go, I'm not sure yet, still need to think about what I'm going to use in the head - High lift cams, valves, springs etc. And I haven't really thought about what manifold I'm going to use yet either, although I know what turbo I'd like to use at this point.

The engine will be going in a weekend drive/trackday car. I'd like to start off hitting 400hp after the rebuild and then work from there, getting as much power as I can out of it for a track map.

Any thoughts and advice would be greatly appreciated

I'd go to an 86.5 bore

why are you overengineering this? just use a 5S-FE crank, grind the rod journals down to fit Eagle 3S-GTE rods. and i have wiseco pistons in my Stroked All-Trac

The jun stuff is way overpriced.
Like smaay said, run a 5s crank and wiseco stroker pistons with the eagle rods.

I'm sorry, I wasn't aware that I was overengineering it - I've read of people building 3S strokers with a 5S crank before, but I wasn't sure until recently that the 5S crank could handle the same power as a purpose machined, lightened stroker crank. What stroke distance would I achieve with a modified 5S crank then? And for the sake of being thorough, could you give me your input on the question of the JE pistons with the above anyway? So that I know all my options.

The 5S crank is forged, right? Where might I get one? You see I planned on building my engine with as many new parts as possible from the outset. Basically starting at zero miles on all the internals. That doesn't necessarily have to be the case, that's just how I'd planned it from the beginning.



Yes, I agree with you, it is overpriced, but I'm more than happy to pay a bit more to get good reliability and a strong engine capable of handling big numbers. I want to build it once, properly. If that means spending more to begin with, then sobeit.

Any particular advantage to running 1/2mm bigger bore on this setup? The cost of having anything machined to tight tolerances is very high here - I would have to send the engine components to England to get this sort of work done because I don't know of any engine shops in NI who do such work. This adds more cost to the build and if possible I'd like to avoid having to send stuff here there and everywhere to get work done. I don't even know where I'm going to have the head work done at the moment. Chances are that's going to be a big problem with my build when I get to it - I'd love some suggestions on good, reputable engine shops in the UK if anyone knows of any.

This post has been edited by Unicorn: Nov 17, 2011 - 1:05 PM

the easy method:
http://atsracing.net/Parts/Index/ENGINE

Might be a good idea to sign up on www.mr2oc.com and research the stroker motors there
Also the over sizing of the piston, helps lead to a square (or even oversquare) setup, which reduces the side to side motion of the assembly (reducing heat, wear).

This post has been edited by playr158: Nov 17, 2011 - 1:08 PM

Hi,

if it helps

http://www.briancrower.com/makes/toyota/3sgte_stroker.shtml

greetz

Ah yes, the easy method I've seen several different place selling RTB short blocks. None of them have been as reasonable as a little under £2K for a 2.3L stroker though. That's seriously tempting, but it'd cost a bit to get over here, and I wouldn't have the satisfaction of building the block myself

I was aware of the actual purpose of boring it out, but in this application (with a 90mm stroke) you're only getting a maximum of 1mm more (87mm) over the stock 86mm. I know every little helps but isn't it more effective if you're not stroking out the block?



Hey Sunny, thanks for that link, I've seen those BC kits as well. Probably the best kit for what I want to do - much better value than the JUN stuff too! I just favoured the Eagle rods and JE pistons from several reccommendations.

You guys have already given me so much help and the thread has only been up for a few hours! That's why this place rocks

This post has been edited by Unicorn: Nov 17, 2011 - 2:20 PM

the 5S-FE crank is not really modified, the rod journals are just ground down to accept 3S-GTE rods. this is the setup i have in my All-Trac.

Well, yeah. That still means some machining and balancing, right? I call that modified compared to an aftermarket stroker crank that just drops in. Is it hard to do? I have access to CNC machinery and a couple of very talented machinists to operate them (I am trained on the same equipment but not to the same standard or level of experience as them). Do you think it's something that could be done without having to send it to an engine shoP?

on my bros 5th gen we the 5s crank, 3s block ,cp pistons , eagle rods , that motor felt tourquey. also a friend of mine has same set up on a mr2 and his pushing 600hp reliably


This post has been edited by 99gt3sge: Nov 21, 2011 - 12:00 AM

Thanks for your response. Now that I'm 100% aware that the turned down 5S crank can handle big power, can anyone tell me what sort of cost I might get a 5SFE crank for?

I'm weighing up my options between going the 5S way with Eagle rods and JE pistons, or using a BC stroker kit.

Thanks for all the advice so far guys!

pretty sure its not that expensive you can probably find one for sale in mr2oc or around here if anyone has one lying around

at your local wrecking yard u can get one for 50 bucks or or so,

IMHO you cant beat a 1000usd (after all the machine work and or considering new pistons and rods) stroker kit if you choose the 5SFE route. I belive the only real problem was with the machining up a proper flywheel....something im surprised nobody spoke about yet....although its not a problem that machining cant fix, there are aftermarket options yet they limit mostly to single clutch applications...Someone correct me if im wrong though..

This post has been edited by 3WayStunna: Nov 21, 2011 - 6:07 PM

the fidanza flywheel for the 3S-GTE also fits the 5S-FE. i have one on both my All-Trac and the 6th gen

if i had the money, i would have gone for the jun stroker kit with pistons, crank and rods. my dream! my dream!

Okay, all great info so far but what if I told you that 5SFE engines weren't that easy to get hold of around here? Neither are 3S-GTE's tbh. The local "breakers yard" that someone mentioned is the only one in this part of the country and it doesn't generally have a lot of 90's Toyotas kicking around.

Please remember that you could fit Nothern Ireland into California about 30 times and still have a good amount of land left over... This build won't be as easy for me over here as it might if I lived in the CONUS

Most of the stuff I'm putting in it will probably have to be imported, and even the Engine might have to come over from England or elsewhere on the mainland. I'm not trying to make NI sound like some speck of sand in the Irish sea or anything, it's just that when it comes to building a high performance early 90's Toyota engine, you come across a distinct lack of engine and parts sources

This post has been edited by Unicorn: Nov 22, 2011 - 8:41 PM

man that sucks, its like here in the US we got the water down version of the celica! everyone else got the gt4 but us. and as far as the flywheel its the same bolt pattern, but i think the earlier models might have been diffrent bolt patern.

There are a few people parting cars (KAOS is parting a 5sfe) in the BS section of this website.
Shipping might stink, but thats the easiest way to get yourself a 5sfe crank