Dinan Throttle Bodies for E46 M3

[Feffman]

I have the Dinan set. Was able to get it on eBay like 2 years ago for $1,500(?) I think. They come up every now and then there + MPWW. Or you could do this as an alternative: https://store.vacmotorsports.com/vac...s54-p2430.aspx

Advorsor, I'd like to visit with someone who's running the bored VAC t-bodies. VAC lists them as "V.2", almost insinuating these are a second generation version. Was there a previous generation which they upgraded?

Anyone running the VAC enlarged throttle bodies, who'd like to jump in?

Feff

[Advorsor]

Someone is inevitably going to come in here and talk-down VAC products. I personally never had a problem but YMMV. I don't know anyone who has these so GL there but its really just boring out the TBs. I would think they are competent enough to do that..

[maupineda]

Is not the closing plate also custom to seal the TB? Though simple in principle I am sure is a precision job. But I would think a proper machine shop would be able to do it to spec.

[x Spades x]

I called Dinan directly and they no longer produce the-t-bodies for the E46 M3, nor will they do a one-off single set or group deal.




My new racing S54 has head work, larger cams, exhaust, etc. to run to 8,500RPM (ish) so the larger t-bodies will help with a bit more than 1HP, I hope. SCCA just approved the larger ported bodies for class T1 for the S54.

Feff

It won't brotha.

A number of us have tried this out about 9 years ago. Full built heads, ssv1 systems, cams, etc... 3-5 hp is the result when dynoing only the TB difference back to back.

[x Spades x]

That would be great if we could find a good source who can do the job to Normal M3 TB's.

VAC can do them. I'm sure you guys can get a group buy going. It would be better just doing a GB for Stage 2 head or something. About the same cost and more benefit

[Feffman]

Hugh Stewart, SCCA T1 racer extraordinaire, of Hi-Speed Motorsports (https://www.facebook.com/hispeedmotorsports) is taking up the mantle with dyno numbers before and after boring. It may be a few weeks, but he's promised me detailed information on the results.

Feff

[x Spades x]

Hugh Stewart, SCCA T1 racer extraordinaire, of Hi-Speed Motorsports (https://www.facebook.com/hispeedmotorsports) is taking up the mantle with dyno numbers before and after boring. It may be a few weeks, but he's promised me detailed information on the results.

Feff

Whats the pricing? Is there a core charge,

[Feffman]

Whats the pricing? Is there a core charge,

Hi-Speed Motorsports is not doing the boring on the t-bodies. Hugh is sending them out to be bored and then he's doing before and after dyno testing.

Feff

[HighOnLSB]

Is he willing to share the shop doing the work or information on the work so people can get it done with a shop more local to them? Pending good dyno results it sounds like this could become a popular mod...

[Feffman]

Is he willing to share the shop doing the work or information on the work so people can get it done with a shop more local to them? Pending good dyno results it sounds like this could become a popular mod...

Hugh has sent them to Crest Automotive (https://www.catune.co.uk/category-Y2...lPWU0Nm0=.html) for the throttle boring. I believe they do a 1.5mm bore.

Feff

[HighOnLSB]

Appreciate the info. Will be looking forward to the dyno results. A new thread in the main forum could be useful for that discussion.

[davidinnyc]

Feffman I’m curious to see the results myself!