E30 Street/TimeAttack (+ E36 V8 Turbo Touring)

[Coyote_ar]

basically most people just say "water to air is for drag cars", because they asume that water will heat soak.

the reason for heat soak, is that the radiator is undersized.

there are 2 true drawbacks for water to air, and is not heat soak. its weight and complexity. if you are ok with those 2, then its superior to air-air.

[Blake B]

why the hate on the water to air? I find most that oppose it, have never used it and are just regurgitating what they've seen online from others who have zero experience with it.

The rx7 and mr2 communities have had alot of success using them (including in DD setups). I can't wait to see this in action

[xF4LC0NxPUNCHx]

Thank you!
Well I don't find it any more complex than moving the engine radiator to the trunk, it would also need the piping, pump etc..
Julien already mentioned few things why, water-to-air intercooler has a lot smaller cell size than equivalent air-to-air cooler and I didn't want anything that massive in front of the car. I also find it easier to build charge piping that way with fraction of the lenght (displacement) the air-to-air setup would have come with. Well designed setup should not heat soak either.

Had you considered maybe doing a V-Mount or Z-Mount setup in the front before you decided on air/water?

Also, any progress? :D

[xF4LC0NxPUNCHx]

Oh, then you should totally do that on your E30 Street/TimeAttack (M30 twincharged widebody project).

I didn't mean to be telling OP that he's doing it wrong or anything like that, sorry, he will naturally do whatever he sees fit, as he should.

[Miuge]

Cool build, will be watching this! Though I must ask: why air/water intercooler? If this were a drag car I would understand, but I've never understood why anyone intending to put their car on a track would want to deal with the additional complexity, failure points, and heat soak of an air/water setup.

Thank you!
Well I don't find it any more complex than moving the engine radiator to the trunk, it would also need the piping, pump etc..
Julien already mentioned few things why, water-to-air intercooler has a lot smaller cell size than equivalent air-to-air cooler and I didn't want anything that massive in front of the car. I also find it easier to build charge piping that way with fraction of the lenght (displacement) the air-to-air setup would have come with. Well designed setup should not heat soak either.

[Ether-D]

Fair enough, though were it me, in that case I'd have mounted the radiator in the back of the car and left a nice air/air intercooler up front, it's quite a common thing to do really.

Oh, then you should totally do that on your E30 Street/TimeAttack (M30 twincharged widebody project).

[ncrmtrsprtsE30]

nice arms i like those!

[xF4LC0NxPUNCHx]

He mentioned wanting to have better airflow to the radiator/oil cooler up front and transferring some weight to the back to offset the weight of the m30.

Fair enough, though were it me, in that case I'd have mounted the radiator in the back of the car and left a nice air/air intercooler up front, it's quite a common thing to do really.

[Julien]

Cool build, will be watching this! Though I must ask: why air/water intercooler? If this were a drag car I would understand, but I've never understood why anyone intending to put their car on a track would want to deal with the additional complexity, failure points, and heat soak of an air/water setup.

He mentioned wanting to have better airflow to the radiator/oil cooler up front and transferring some weight to the back to offset the weight of the m30.




awesome build, love the creativity!

[xF4LC0NxPUNCHx]

Cool build, will be watching this! Though I must ask: why air/water intercooler? If this were a drag car I would understand, but I've never understood why anyone intending to put their car on a track would want to deal with the additional complexity, failure points, and heat soak of an air/water setup.

[Miuge]

Finally had some time to realise side skirt mockup. I hope they don't look that block-like when finished with couple of details and corner radiuses Current wheels look sooo tiny, 650mm dia will look so much better without any tire strech.
Flat floor determined the skirt dimensions, floor will be about 20mm off the beams in front end with rubber mounts. Ride height I'm aiming is about 80mm.

[Miuge]

Thank you all!
Turning radius won't be much affected if at all, depends of the wheel offset and which spindles you're using. Later I'm gonna make a version for plenty of angle :)

[george graves]

Sub'ed. You're making some very unorthodox choices - not so sure all of them will pan out - but I'm interested to see where this goes!

[ThatOneEuroE30]

This build is incredible.

[kingston]

How will the turning circle be affected?