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Topic: My next fox (Read 1191 times) previous topic - next topic

My next fox



Its the 86 Xr7 my dad bought from a member on here last year. He dont understand nunna that fuel injection  so he wants to trade for my fairmont, which hes rebuilding a 351c for but will probably never get done... whatever. Anyway...

It has an IHI and 87-88 hood/IC combo swapped in, other than that, all stock. The IHI is trashed though, so I have a decision to make there. I can either swap the IHI from my TC in or I can swap a T3/T4 china turbo and cross my fingers. Its an auto car though so I think Ill just stick with the IHI and maybe port an E6 and find one of those compressor upgrades on ebay.

As I said it has a C3, which I plan on keeping at least for a while. It has a decent size cooler in the front, so that gives me hope that the tranny is in good shape. Can anything be done performance-wise to these?

What all needs to be swapped to bring an 83-86 2.3 to 87-88 specs? I know VAF, injectors, LA3, but what about the intake manifold and throttle body? The TB is definitely smaller. It has the taller style intake too, for the older style valve cover (which I like).

At this point my plan is to swap any goodies I can from my TC and then it will be up for parts/sale/s. The body is just too far gone for me to deal with, the XR7 is in way better shape.
93 Festiva L, 193k miles, BP+T/G25MR swap, T3 50trim .48/.42, SRT FMIC, Capri electronics/Rocketchip, 2.5" exhaust
bests: ET 12.86, MPH 110.25, 1.92 short
02 Subaru Impreza WRX, 129k miles
97 Subaru Impreza Outback Sport, 236k miles

My next fox

Reply #1
I'm pretty sure throttle bodies are the same.  The short intake will fit on the older valve cover but with NO clearance for plug wires.

88 t-bird tc - 14.97 @ 90  IHI 18 psi + k+n filter...so far - NOW HX-35 @25psi - 12.75@112    348rwhp/395rwtq
78 F-150 - 11.61@120 on 175shot N20 - 12.55@110 on motor - 5200# race weight:hick:

My next fox

Reply #2
Is the short intake better though?
93 Festiva L, 193k miles, BP+T/G25MR swap, T3 50trim .48/.42, SRT FMIC, Capri electronics/Rocketchip, 2.5" exhaust
bests: ET 12.86, MPH 110.25, 1.92 short
02 Subaru Impreza WRX, 129k miles
97 Subaru Impreza Outback Sport, 236k miles

My next fox

Reply #3
intake swap wont make any difference other than clearance issues. TB is the same. 86 should already have browntops with a small VAM and a Pxx computer.

Since it already has an IHI/IC/hood, the only things you need to reach stock 87-88 level is a big VAM and Lxx or 8au PCM. You might find some minor sensor differences between the 87-88 intakes and 86. IIRC I had to drill my lower for the ACT when I did the LA3 swap on my 85.5 motor
gumby - beauty may fade, but stupid is forever!

My next fox

Reply #4
I coulda swore the injectors were either red or green...light messes with my colors a bit though. You're prolly right.

So which turbo do you guys think I should use? I've also got that big fmic that you fixed ethan..
93 Festiva L, 193k miles, BP+T/G25MR swap, T3 50trim .48/.42, SRT FMIC, Capri electronics/Rocketchip, 2.5" exhaust
bests: ET 12.86, MPH 110.25, 1.92 short
02 Subaru Impreza WRX, 129k miles
97 Subaru Impreza Outback Sport, 236k miles