Intake and TBs - Aug Fastrack

[BruceG]

This guy is junk spamming the entire website....needs to disappear!!

[Z3_GoCar]

Here's a new twist on this...

The S-54 came in the Z3 in 2001 and 2002 models and has 6 seperate throttle bodies as it's a real BMW motorsports motor unlike the S-52 pretend motorsports motor... Does this mean that I can use the S54 ITB's on my M-50 motor build? Just floating an idea out there for my next motor build.

[JS154]

Here's a new twist on this...

The S-54 came in the Z3 in 2001 and 2002 models and has 6 seperate throttle bodies as it's a real BMW motorsports motor unlike the S-52 pretend motorsports motor... Does this mean that I can use the S54 ITB's on my M-50 motor build? Just floating an idea out there for my next motor build.

I think not. Block and head must match, and the stock intake manifold must be used. The ITB's on the S54 did not come on the M50, so if you want to use them, I think you would have to use the entire S54 block crank and head as well. Which means you would have to run at 3520#.

[Z3_GoCar]

I think not. Block and head must match, and the stock intake manifold must be used. The ITB's on the S54 did not come on the M50, so if you want to use them, I think you would have to use the entire S54 block crank and head as well. Which means you would have to run at 3520#.

Hello Eric,

That's correct for this years rules, but by the proposed rule for next year:

SUPER TOURING
1. #4144 (Chris Childs) Engine Swaps
Add at the end of 9.1.4.G.1: "It is permitted to use the OEM intake and throttle body for either the chassis or the installed engine."



Since there was a S54 powered Z3, then I can use that oem intake and throttle bodies, and add that to a M-50 motor. Note there's nothing about how to adapt the S54 throttle bodies onto a M-50 motor, so an adaptor/spacer plate is a perfectly legal way to mount it. If you don't like this change to the STCS, then you should contact the CRB, as per the August Fast-track.

[JS154]

Hello Eric,

That's correct for this years rules, but by the proposed rule for next year:

SUPER TOURING
1. #4144 (Chris Childs) Engine Swaps
Add at the end of 9.1.4.G.1: "It is permitted to use the OEM intake and throttle body for either the chassis or the installed engine."



Since there was a S54 powered Z3, then I can use that oem intake and throttle bodies, and add that to a M-50 motor. Note there's nothing about how to adapt the S54 throttle bodies onto a M-50 motor, so an adaptor/spacer plate is a perfectly legal way to mount it. If you don't like this change to the STCS, then you should contact the CRB, as per the August Fast-track.

Contact Karl Peoltl at RacersEdge about mating S54 TB's to that. His ex WC E46Tc car now has something like that and was turning 2:26's at RdAm in 2010 with the BMW club. see link here.> http://forums.bimmerforums.com/forum....php?t=1422245

[Z3_GoCar]

Contact Karl Peoltl at RacersEdge about mating S54 TB's to that. His ex WC E46Tc car now has something like that and was turning 2:26's at RdAm in 2010 with the BMW club. see link here.> http://forums.bimmerforums.com/forum....php?t=1422245

Eric,

Thanks for the link because now I've subscribed to it. I'd seen that before in my search if it'd been done before. Note he did that in D-mod with a 3.0liter block and no mimimum weight. If he bolted on enough weight to run at 3300lbs, he'd probably be a little slower. I'll be sticking with the 2.5 liter, and will be trying to be competitive at about 2800lbs.

[Z3_GoCar]

If you remember my concern about the blanket allowance of 3.2 liter motors in STU. I just came across this thread:

http://forums.bimmerforums.com/forum...7&postcount=14

This is with bolt-ons and a retune, results 328hp at the wheel.