ITB's on a 24v project, Dyno results Post 136!!!

[ForcedFirebird]

what did you find from that exhaust you did?

I ended up in a bad accident in that car, it's long gone. The collector set has been sitting on the shelf since, now a customer wants them, so they will finally get put to use.

[ForcedFirebird]

That was my point about it being a tight fit. I want to see this header when it's done.

I know you are busy with school, but if you stopped by more often, you would get to see a lot of stuff :P

[digger]

Custom made, but seeing this is a thread about a 24v, not m20, it's actually going to be even a tighter fit.

Since you are 2-1, the secondaries can be much smaller.

yes, of course the slant is worse so more room for inlet side of things but less on the exhaust..

what did you find from that exhaust you did?

i did some system modelling and the main benefit seems to be right down low like sub 2000rpm.

[varg]

Custom made, but seeing this is a thread about a 24v, not m20, it's actually going to be even a tighter fit.

That was my point about it being a tight fit. I want to see this header when it's done.

[ForcedFirebird]

Custom made, but seeing this is a thread about a 24v, not m20, it's actually going to be even a tighter fit.

Since you are 2-1, the secondaries can be much smaller.

[digger]

run primaries that tune into a useable rpm 26-30" makes it even harder and longer secondaries such that you also end up with 3 pipes bundled under the chassis which might hurt ground clearance (might be no worse than 4" OD CAT or 3" single pipe as further back you can have a single pipe or twin ? on a RHD it would be even mor fun with steering linkage but not an issue for you guys. certainly has potential improvements over 6-2, ive thought about it recently but im trying to model it and quantify the improvements down low and midrange. for me its probably not practical so ive come up with a 6-2 design that i might get made oneday

[varg]

How is the packaging on a 6-3-1 style header in an E30? Sounds tight.

[ThatM20Guy]

how is the packing with it? usually its a pita to fit.

^^^

I have POS ebay headers currently, so I am thinking I might fab some up for 'fun'

[digger]

how is the packing with it? usually its a pita to fit.

[ThatM20Guy]

6-3-1 system where there are triple 2-1 collectors, coming from the two cyls that are TDC. IE pairing 1-6, 2-5 and 3-4. It makes a very unique exotic sound - think flat plane crank without changing the crank - it gets emphasized with individual throttles.

Any headers that are made like this for an m20 Or would you have to fab your own?

[ForcedFirebird]

More info?

6-3-1 system where there are triple 2-1 collectors, coming from the two cyls that are TDC. IE pairing 1-6, 2-5 and 3-4. It makes a very unique exotic sound - think flat plane crank without changing the crank - it gets emphasized with individual throttles.

[Jaker]

they will be going on an s52 build, along with some TDC-paired (aka 180°) headers

More info?

[ForcedFirebird]

Bump for progress on this! I am interested for fitment on an E30 swapped M52.

Is there an airbox that will work?

We have parted ways with Jenvey, but that's not a bad thing. Rama at RHD has filled in that spot for us. :)

As far as the throttles in this post, they will be going on an s52 build, along with some TDC-paired (aka 180°) headers in a Bauer e30. The pistons were delivered today, but as far as fitment, we are a few weeks to a month out on that deal, and they will NOT be using an airbox.

The biggest hangup is the 24v engines take up more space, and decrease the available room to keep clearances around #6 cyl to keep that "bubble" around the intake clear. Realistically, the best scenario is to keep one throttle diameter of clearance around the trumpet. To stuff that inside an airbox, then clear the brake booster (or even master) si going to be a challenge.

[AWDBOB]

Bump for progress on this! I am interested for fitment on an E30 swapped M52.

Is there an airbox that will work?

[digger]

IMO if you're realistically going to be boosted one day then id use a single TB