FD Upper on an Fc.
 

I know guys have done it,But my question is what throttle body is used?.
I would like to Run an FC throttle body on the FD upper intake/middle,using that spacer..blah blah...Will it work?..OR,can you wire the TPS of the FD throttle body to Work like a s4 TPS?..as usual Thanks Gents.STYX.

use the FD Throtle body and yes you can wire it like s S4 TPS(switch type)instead of full reading

Thanks for the answer Joey,That saves me alot,I thought "oh God!,I have to modify stuff to get the TB to work as s4 with the Rtek..Shugarr!"..anybody have a Diagram they can point me to for hooking up the TPS?.Thanks again,Styx!~

id like more infos on this too !!!!

+1 on getting more info on this subject! I'm looking to do this mod as well. Anyone make premade spacers from fc lim to fd uim?

this has been covered a billion times :p:

the only spacers I know of that are still being made are FEED spacers, and they're like $450...

I use to make them . I'll make them again if I can get 10 prepaid orders.
http://rbautosports.com/index.php?ac...od&productId=4
Thanks Robert

there is a narrow range TPS wire from the FD TPS that you need to splice into your TPS harness. the FD TPS needs to be adjusted so that the narrow range TPS wire has voltage of around 1 volt closed and at least 4.5-4.8 volts WOT. See FD FSM page F-168. There are two adjuster screws used to set the TPS...they like to strip out. you can replace them with allen bolts.

Thanks ARGHX!.Actual Info..and very Specific too.Excellent!
Eage8.no Soup for you!
the setup I was interested in has the spacer..but no throttle body.
..ARGHX..can you Send me that particular Page of the FD manual,or Someone please Send me a Link to the FD manual?.
Again thanks.STYX.

why? the whole idea is that the FD TB is larger then the S5 TB

FD upper
 

Here is my brothers setup,S5 bridgeported Keg,S5 lower manifold and port matched FD upper(no spacer here)we welded some aluminum material in order to get the manifolds runners to fit 100% perfect without using any spacer,we make our own gasket out of cooper material in order to get a perfect seal(not needed you can use regular gasket material to make your own gasket),he also used the FD Throttle body(ported)and tps,before the car was bridged he drove the car on a streetport with the FD TPS on a stock n333 ecu(S4 turbo ecu)without any trouble at all.Go for the FD throttle body you will feel the diference.

Hey guys,
I will be make spacers again but they will be made out of cast aluminum. I'll have about 100 made. Im trying to keep the cost down. They should be ready in a month. So if you are interested lmk.
Thanks Robert

When someone does buy one, they should rig it, test it, go to the dyno, make a run, put the original intake on, make a run, and post results.

One test > 1,000 expert opinions.

Thanks Joey!.I am gonna be doing this in the spring,so knowing that it Can be done gives me HOPE!..I just gotta sort out the TB issue(I may need one...NOT right away,so no pm's guys!.heh),and the Tps wiring...you guys have helped immensely.Thanks for the Detailed info.Cheers,STYX.

this might sounds pretty dumb but..... can this be done on none turbo fc's?

is there anyway to do this mod to a s4 intake manifold?

X2!!! why does everone neglect the s4?

The ports on the S5 are easier to work with than S4. The ports are different on both so you cannot mix them.

With a spacer it will work on an s4 tII manifold. Ask me how I know

^^^^Pictures?

John ny

Ok..I'll bite..I wanna Ask!(do you have a Pic or two JW?.Thanks.)

I wanna see it too.
The S5 and S6 ports are close enough to port the S5 but when you port TO MATCH, not close enough, the you'll be cutting too far into the walls on the S4 LIM.

This an S5 LIM on an S6 gasket and as you can see how much need to be cut for a smooth flow. Imagine S4 being worse.

http://img91.imageshack.us/img91/9682/s5tos6tg6.jpg

I do have pictures there is a lot of Porting to to be done to directly match the S5 lim to fd with out an adator plate. The thing with the s4 is not the runners so much as it is with the mounting points when I get on my comp I'll post pix and info an adaptor is absolutely nessisary so is hole enlongation on the fd uim holes you will also have to do some thing with the mechanical Omp

I am using an S5 Keg JW,and it is going in an S4 N/A car,going turbo.
The keg as I said,s5 with s4 front cover,Omp deleted,running premix on a RTEK 2.1...(damn that is starting to sound good,and I don't even have it in the car yet!).

I've got one that I would be willing to offer up for free if someone would dyno test it. Obviously I have some stipulations( 400+rwhp and gotta be done in a reasonable time frame)

there is a kit on ebay,it's not chrome (trying to keep the cost low) but it works..:)

http://cgi.ebay.com/ebaymotors/manif...Q5fAccessories

so where are the pictures?

I would really rather not take the time to make my own if I don't have to.

im currently in the process of find an adaptor plate already have the fd uim and tb w/ tps sensor just shopping/asking around looking for an adaptor current set up is street ported 13bt with hybrid turbo running on a microtech ... put out 301rwhp on stock 13bt now with the street port and fresh rebuild this should get interesting. so if anybody knows somebody with a cheap adaptor or someone who knows a shop/human that knows what they are doing. cause personally i do not want to mess with this s%$# ... HELP ME OUT PPL !!!

pix are here
my adaptor is a one of a kind youll have to make your own
http://www.nopistons.com/forums/boobs-forum-t74634.html

^ he's supposed to be making a batch, I just pmed him about when they'll be done, I'll post here when he responds.

only s5 though :(

get an S5 LIM then, I'm fairly sure they bolt right up and are better anyway....

this is what i did use in my t2:

http://cgi.ebay.com/ebaymotors/manif...Q5fAccessories

and i'm very satisfied...:)

I like the title!

now do your bolts go through all three pieces or did you have to put studs in the spacer?

thank you lol. I used the lim studs and extened them an inch then just have to slot the uim for the studs to pass thru

so just to verify, you got longer studs for the lim and hogged out the holes on the UIM?

exactly, but its more like an enlongation of the holes. search bluetII he has a wicked write up the pix are gone but still has great info in it

How does one address the problem of the FD TPS with the S5 ECU?

stand alone

without the replacement of the ECU, I meant.

I would think that there would be a way, since the FD TPS is a 6 pin like the S5 TPS, with similar ranges for narrow and full, if I remember correctly.

I could be wrong though.

I don't know, look in the FD FSM... does the FD TPS report the same signal?

if it doesn't you might be able to design some sort of conditioning circuit...

I don't really have that problem, and am not a big fan of the stock ECU in the first place...

if that's the case, then just solder the FD tps to the S5 tps clip and you're good to go.

I'm not thinking from a stock ECU standpoint, as much as I'm thinking from an Rtek standpoint, which has the simplicity of a non-labor intensive install, no re-wiring, uses stock sensors, full timing and fuel control, but is still limited in ways that the stock ECU is, such as TPS wiring.

I was thinking that, but was hoping someone could confirm that it was, indeed, the case.

I would just make the fc tps work on the FD throttle body.

By that I mean physically mount it to the throttle body replacing the FD TPS


-also if the top end value and bottom end resistance values match that is good but you need to make sure they are both non-linear or linear. And if they are non linear, you need to make sure they follow the same non-linearity.

the FD TPS isn't a plunger type, it's totally different, it would probably be decently hard to get a FC tps to work.

When I get home I will take a look at both, but if memory serves the fd is the spinny type, and mounted around the throttle shaft, correct?


either way mount an arm to the throttle shaft and have it push the plunger in and out.

to be exact we used a high grade .75" aluminum block (specific type of machining was used, forget the name) the problem with most adapters is they try to cut thru. you have .75" to match the ports USE IT. so what happened was i had the CNC cut only so deep straight with the ports and then we hand ported the blocks to match smoothly. no tight corners no bullshit. smooth flow all the way.

in fact i still have full blueprints and the cad files for the s5->fd AND s4->FD adapters. They're in the seat pocket of my FD :)

Only thing we never got to was triming the block to a curvy shape, in it's block shape it's easier to ensure a good seal, i prefer function to looks but whatever. if we did trim it to a curvy shape it still would've had proper seal space, stock amount of lip.

anyone wants to pay for raw materials i can probably get my friends to throw it thru the CNC again. Hell if they had access to a more advanced CNC machine i wouldnt have had to port it by hand at all.
on my s5 i didnt modify the UIM OR LIM...as far as i know jwteknix didnt port his s4 UIM OR LIM either...the design of the adapter made it unnecessary.

the problem with swapping mani's to dyno test is youd have to re-rewire your tps and other stupid small things, if i had a personal dyno id do it. Also dont forget you'll need to shorten you oil fill tube or buy the lower half of the FD tube. (if you can cut and weld you'll figure out a quick way to mod it as i did)

kevin.

Thanx kev. There is also a write up on here that shows how to properly wire the fd tps to the s4 and s5

I'm sorry if this sounds stupid but what is gained by using the FD UIM? Why not swap in the upper and lower? I'm guessing the ports are located differently? I'd like to see some dyno comparisons of FD and FC S4,S5 Manifolds... Sheet, Why not RE manifolds? or Custom?