FPrep2ndGenRX7

For my FP car I've considered rebuilding a TII engine with N/A rotors and have it bridge ported. Use the lower intake piece off a TII with a custom intake plenum similiar to the SDS one on this link.

http://www.sdsefi.com/techinta.htm

Using the lower TII intake piece I'll use the factory locations for fuel injectors along with some stand alone EMS to control everything. Remember that the car will be N/A since a turbo is not allowed in FP.

Any feed back about this combination of parts?

Greg

I like

KNONFS

iTrader: (14)

Honestly, a 4 port engine with 89-91 (or even 3rd gen rotors) is my dream NA engine. I've seen lots of cars with this combination (or similar), RB intake and Holley beating the hell out of Z28, DSM, etc.

Now with a EMS, it should be even better. I would recomend, using a T2 lower manifold with a Webber style EFI upper intake, or a RB manifold with a Holley style EFI carb. Another option is to get a spacer and use a lower T2 manifold with a FD upper manifold.

Honestly, I keep debating myself between doing a T2 swap, or what I mention above

zyounker

I would get a IDA style manifold for a 4 port engine and then buy the TWM TB for it.. And use some sort of Fuel computer..


Check out:
http://www.twminduction.com/Throttle...leBody-FR.html

the 3000 series would be the correct one.. and they run ~300...


-Zach

peejay

i remember reading somewhere about a racers who do just that for oval track use... i dont even think they switched to N/A rotors, kept the turbo ones... bridge port and standalone EFI with the stock intake manifold.

FPrep2ndGenRX7

My reason for using the lower TII intake piece is to save money. Build an intake plenum with air horns inside and the distance from the air horn to the ports in the engine is about the same as an IDA setup. I have to do this the least expensive way I can and buying the TWM pieces is not an option for me. If I can get 95% of the performance as the TWM stuff I don't think its worth it to spend the $500 +/- when I can spend $100(maybe less) and build it myself including a throttle body with a TPS already mounted on it.

zyounker

Then why even do it? you could just use the S5 TII lower and upper intake.. and use the TB from it too..


Then just get an extention made and throw a k&N filter on..


Pick up a fuel computer and you are done.


Obviously you will need a map sensor too. or you could probably use the MAF from a TII...


-Zach

FPrep2ndGenRX7

zyounker - The map sensor mounts easily in the intake plenum I want to build. I also want to keep the intake on the right side of the engine. My FP car doesn't have headlights and I want to mount the air filter on/in or near the right headlight location. The TB will be mounted on the end of the intake plenum instead of the side. That keeps everything away from the left side of the engine. I'm going to have power steering eventually due to 10" wide racing slicks and the power steering pump is right in the way of I use the factory upper intake piece. The factory upper piece is also heavier than what I want to build.

I'm not sure it the factory TPS or MAF is usable with all stand alone EMS.

KNONFS

iTrader: (14)

I'm almost sure you can use the 3rd gen mafd sensor with a stand alone.

Atkins sell the EFI webber style TB, and manifolds, the whole kit including a Microtech, with maps, spark plug cables, etc for +\- $2800

rotarygod

iTrader: (1)

That engine combo should work great. My 2nd gen has the stock lower T-II manifold due to injector location but I did build a custom upper manifold out of aluminum. There is a 75 mm Mustang tb. attached to it. The idea came from the SDS website but mine looks nothing like theirs. I have a large rectangular plenum and my runners exit out the back of the plenum and the turn 90 degrees downward. My tb is also very far away from the plenum and around a 90 degree bend facing the front of the car. This was done so that the turbulence from the throttle plate would be dissipated by the time the air gets to the plenum. It works great!!! Screw the factory upper and tb, mine flows much more I'll have to post some picks. It is damn cool looking.