How to fit a 3.3 intercooled 930 engine in an early car......

[thrown_hammer]

I may have an oppurtunity to pick up a 3.3 930 engine. I want to install this engine in my '73. I would like to use the duck or even go tailess from time to time. Help me brainstorm the intercooler location and fab work it would take. I am open to any size, shape, or configuration. How about sticking one in the drivers side rear wheel well ala Ruf? Don't try to talk me into a 3.6 swap cause I can't hear you....

[Tim Walsh]

I know it's been done. I can remember seeing a brown ducktailed car floating around here somewhere with a turbo motor in it. Try a search since I think it's come up before.

[BURN-BROS]

There was a peculiar tan colered 934 style with center locks in Excellence that had a 3.3 with intercooler and a duck. You are going to love that torque!

[Ho Hum 74]

Shawn,

What happened with the 3.2?

Tristan

[jpnovak]

it should be fairly simple. First bolt the engine into place complete with intercooler. Then make a cardboard template the fits over the intercooler. You will need a clearance height too. Section the center of the ducktail until it clears the intercooler by an inch or so. Glass in a patch to cover tail, smooth and paint.

If you look at the 934 esqe car that had a turbo and ducktail you can see where it gets cut. the cut should be behind the existing grill opening and a few inches up the "tail' section. Use a block of epoxy foam or clay to mock up and then glass over it. you will make lots of dust but it would be worth it in the end.



That sounds like an incredible combination.

btw, I am looking for a 3.2 if the price is right

[obrut]

http://forums.rennlist.com/rennforums/showthread.php?t=100096

here's the brown car from excellence - duck is an easy fit

i'm sure its been discussed here too but can't seem to find it

[thrown_hammer]

I may be trading the 3.2 for the 3.3 930 engine. Let's get crazy....what if I want to lose the duck and go tailless? Lets climb out of the box!

[Eric Mckenna]

ugh OH!!!!!!!!!!!!!!!!!!!.. I I see T.H. has given into the Darkside!!!!!!!!!!!!!!!!

[john walker's workshop]

use a 3.0 turbo intake system and bag the intercooler. you won't miss it much. a dyno run to see if there's any detonation would be good, but proper timing, boost limit and A/F ratio would take care of that, if it happened at all.

[jpnovak]

I think the hard part about fitting an intercooler is that it should be placed above and behind the fan. this is so the fan draws air through the grill, intercooler and motor. Otherwise the intercooler becomes a large heatsink with no cooling convection. Not good for power, really bad for detonation.

Tailless could work if you had the IC in the fender or a thin one with good ducting. Maybe a ram-air type system would work and you could put the IC on each side of the fan.

[David]

If you go with EFI you could be more flexible in intercooler location since you could lose most of the CIS stuff and relocate the BOV. Like JW said, you could just go without an intercooler.

I was looking at one of the new turbo Miatas the other day. It had a tiny intercooler of course it's not making much power. There are a couple of intercooler fabricaters in the US that could make a small one that would fit under a tailless engine cover.

[thrown_hammer]

Would a stock 930 I/C fit in the wheel well? I was thinking you could put a deflector on the bottom to scoop air into it......Just need to do some custom plumbing. I want to use as much of the stock 930 stuff as possible......for now.
I still dont know if this will even happen as we are still in early discussions.

[RickM]

By today's standards the stock 930 IC is considered small and very innefficient. If going with a small IC perhaps a modern one would make more HP sense.

[atlporsche]

what if you made a "turbo duck"

just fill in the area from the top edge of the duck tail to the leading edge of the engine lid. mesh the whole top of it...voila...IC under duck

sjd
...on second thought...it'd probably look stupid...N/M

[echrisconnor]

Isn't your rear deck rusted into oblivion? If you're going to cut all that out and fix it, could you bump your firewall forward and mount an intercooler towards the firewall with a couple big electric fans on it?

I now realize that was a coulpe years ago. We have the Technology...We can rebuild her...

[thrown_hammer]

Yeah that was a few years ago..... But I am not against cutting stuff up to pull this off. You know what they say....The Saw is Family. This is the "out of the box" type stuff i am looking for. Keep 'em coming!

[echrisconnor]

OK, then why not continue along this vein. Cut a hole in your firewall and mount the intercooler against it, so that effectively the intercooler is in your back seat. Then fabricate a box to cover it all which bolts to the firewall. A big nasty 1800cfm electric fan would sit inside the box, on top of the intercooler and blow air into the engine compartment.

Have two fexlible ducts coming from each of the rear wheelwells into the box to draw in fresh air.

[Jim Richards]

Turbo early car? Wow!

[RarlyL8]

Rich Boylan put a 3.3T in an early car a few years back. Do a search on "rboylan".

There are few options for using an intercooler and no tail. The cleanest install I have seen is a custom cooler placed below the stock deck lid grill.

[adomakin]

Shaun Im facing the same prob. Im building a 73 RSR rep and its going to have 3.3 turbo power. I want to run a big intercooler so at the moment ive resigned myself to making my intercooler as big as i need and just removing as much of the ducktail that gets in the way of it.
im not actually bothered if people think it looks rubbish because id have overtaken them by the time they have voiced their opinion!!
WUHAHAHHAHAHAHAHAHAHAH------WUHAHAHAHAHAHAHA!!!!