Ok so most of you know I'm in dire need of a rebuild in my SE (YEELLLOOWW). Finally pulled out my Debit ViSA and reseached and searched far and near to find a S5 TII motor. Found one in CA for $1000 plus $250 shipping. Tried all the listings in the Little Nickel and found a JDM importer in Auburn that had one. Grabbed a truck and went down there yesterday. And what did I find out??? ITS NOT A S5 TTI! It was a S4! Grrr. So sitting right next to it was a FD engine..hmmmm. Ended up picking it up for $1400 after tax. Now heres the part that most of you are going to be like WTF???!!! I bring the whole assembly (turbos, intake, cut wiring harness) to Atkins. Dan is going to convert it from turbo (low compression) to N/A (high). I'm doing this due to I want the best fuel economy for a daily driver. I know its a waste. You guys can haze me later.

So the plan:

S5 cast irons and housings
S6 rotors (I think thats staying)
S4 upper and lower intake
S3 front cover to drop in my SE

Pinapple racing sleeve inserts, E-fan, FD alternator, FD serpentine belt drive system. K&N drop in air filter, RB full exhaust, NGK plugs and wires, Accel super coils, SPEC stage 3 clutch, RB lightweight flywheel...........HOPING to hit 170hp nonported (hehe)

Its in Dan's hands right now.

 

i'd like to see it hit 170 without a port, that'd be cool... good luck with that... i'm hoping to run mine at bremerton raceway maybe this weekend(need to check the schedule see whats going on), hoping to hit 14's

 

I hope to post a few meets at Bremerton Raceway after the project is complete. Ya know to blow all the FC's away. Friday is usually test and tune. No bracket racing so us 7's can go head to head until dusk for about $20. Later this summer I will make a meet like that with going to the Drive In (about 2 miles away) afterwards. It'd be great to see a line of 7's with track times in their windshields watchin Land of the Dead or something.

Elysian,
You offered your help with the swap and I'll probably call on you in the next few weeks.

 

Good luck. There's nothing wrong with a S4 13BT. Easy to mod. With exhaust mods and a Rtek 1.7 chipped ECU, your close to 250hp to the wheels.

S5 N/A rotors are the highest compression?
Are you going to premix?
what ECU are you using?

 

Good Luck with that... I hope it comes out the way you want it....

 

yeah i believe S5 na rotors are the highest, aren't they 9.7:1? only thing higher is RX8... but he specified S6 rotors, maybe a typo? if not, S6's are 9.0:1 rotors, but they r fully machined unlike S4 and below which are cast and S5 which are cast but the cups are machined.... the S6 are also really light(tho i don't think rx8 light)

 

aren't all S6 rotors low-comp?

 

Mabey he's going to make the cups larger to raise the compression.

 

What engine place....hopefully not a-one motors. I looked there and saw a s4 with aftermarket BOV. I was thinking about getting it and talked to woundup and when eh was looking to do his swap back in feb the store owner told him not to get it because it was crap. That is why I did not pick it up. If you are planning on rebuilding it it might not be such a big deal. Best of luck. How long is this going to take you?

~Z

 

yes it was aonemotors. I ended up getting the FB Twin turbo to the oher one they said it was a 89 and it wasn't. My mistake. Have to be using S5 rotors. But am using FD corner seals and springs. What was it that Dan said we were still using out of the FD engine.....

Using SE wiring harness and ECU. And hopefully by the beggining to middle of July this should be done. Keeping the S3 front cover and oil metering pump.

 

you shooting for 170 to the ground or 170 to the motor?

 

Can you still use the serpintine drive system with our front cover? How does that all work out?

~T.J.

 

good point... i dont believe you can actually. To do that youd have to use the FD waterpump housing and I dont believe that would work with a 12a or GSL-SE front cover. Atkins sells a serpintine system for the engine... hint hint

 

This is going to be n/a? Why are you using s6 (FD) rotors then? The s4 and s5 n/a rotors are both higher compression, without turbo that's just a waste, unless this was a typo?

 

S5 n/a are 9.7:1 compression, highest for 2nd gen, rx8 has 10:1 compression, though, but not a lot of gains have been found swapping between the two interestingly enough.

 

Not sure if you were implying s6 rotors were lighter than s5 here, but s5 and s6 (TII, n/a, FD) all are the same weight.

 

and u know... i knew that lol, but i think i brain farted a bit on that post, cause i didn't really think about the S5 rotors much...

 

I admitted that I made a mistake with saying we're using the S6 rotors. No the turbo's are not a waste due to I will sell everything I can from the FD motor on ebay . Needed some core parts from either S5 or S6 to do this rebuild. Not a typo...its N/A

 

I dont really understand why you even bought that engine since you are not using hardly any parts from it. They wasy i see it, all your using is the E shaft, bolts, and housings and mabe an oil pump? All the other stuff is from an s5 or se. Sounds like a waste of time to me buy an engine and then part it all out, for parts you could have bought for the same price in the first place. And i doubt it will hit 170 wheel. atkins can hardly pull that out of their supercharged engines.

CJG

 

he says 170 and i'm assuming there'll be some porting going on. starting with a turbo motor gives you more material to port, does it not?

 

he also stated no porting

 

You find me a S5 N/A engine that either has low miles or is a core?! Can't find one!!! Even if I did find a core it costs about $2600 before core return to rebuild it. So lets see.... $1400 for engine+$1000 for converstion-my SE core-ebay part out= CHEAPER! And this way I wont question the condition of an already running S5 engine....


Doubt I'll hit 170? Maybe. SE starts at 135+my current upgrades+S5/S6 shortblock with pinnaple inserts+S4 intake+efan and K&N.....we'll see

 

I got my s5 n/a engine for free!

Are we talking 170 at the wheels or flywheel? That's a whole different ball game. The s5 n/a block is rated at 160 at the flywheel in stock form, so being generous and saying the drivetrain loss is 15% (though I usually like to rate it closer to 20%) that would be ~136 at the wheels using s5 n/a rotors and intake design. But, you're not using the s5 intake, you said s4 correct? The best "hybrid" option for the intake manifolds would be to use an s4 LIM with s5 UIM/dynamic chamber/TB. The s5 vdi really helps, but the s5 LIM is smaller in size than s4, so using the best pieces from both would be the best option.

Pineapple inserts, well that's debateable. I personally wont use them, friend of mine lost an engine to them, but the concept for them is valid, a ramp is much better than a flat wall. E-fan wont add or subtract any power, I consider it a wash. Is that K&N going to be a cone or just insert for the airbox? Lets assume a cone for now, unless you build a true CAI or make a cold air box, you will LOSE power over the stock air box design, just food for thought.

Getting 170 at the wheels with no porting can be difficult. Icemark hit 170 at the wheels with a super tiny streetport (he lives in CA), while keeping all emissions/junk and stock exhaust manifold with cat setup. So yes it's possible, but you must pay attention to detail.

 

Update: Atkins tore apart the JDM 93+ Twin turbo and found both the rotor housings were out of spec. Therefore, its no good to reuse. I spent $1400 on cast irons, rotors, and longblock pieces pretty much but otherwise Atkins said it wouldn't have started. Which if I did try to install just the twin turbo engine and didn't work, I would have gotten either another engine or my money back due to the warranty. But since its ripped apart, null and void. SO, now I have to find used S5 GOOD rotor housings...........another $500 Should have gotten the S5 longblock from asapmotors.com and if it didn't work get a rebuilt one at their cost..........

 

That sucks, hang in there and good luck with the housings.

Educate me - Why do you need S3 front cover? Would a S4 front cover also work?