Who has the minerals to run this?

[BURN-BROS]

I know what it came off of, do you?

[BURN-BROS]

3ldz comparison

[jpnovak]

Toyota Racing MR2 LeMans
750 HP, 2140cc @2.5bar boost

I wonder if my 2.2L Targa could handle this? I should just "bolt right up".. Whaddya think Aaron?

[911nut]

That divided turbine inducer is useful only on a equal length exhaust (headers and collector, like a RarlyL8 header or a equal length inline 4).

[BURN-BROS]

Originally Posted by jpnovak

Toyota Racing MR2 LeMans
750 HP, 2140cc @2.5bar boost

the Toyota link is easy, what else ran it?

Originally Posted by jpnovak

I wonder if my 2.2L Targa could handle this? I should just "bolt right up".. Whaddya think Aaron?

Well you are close on displacement...

[BURN-BROS]

Originally Posted by 911nut

That divided turbine inducer is useful only on a equal length exhaust (headers and collector, like a RarlyL8 header or a equal length inline 4).

Yes,no, maybe. depends on what you mean by equal. Equal left and right exhaust, yes.


Here is a 935 header for a similar type turbo. Some doofus dorked up the wastegate circuit... Notice it's close to equal.

[jpnovak]

935 Baby?

[BURN-BROS]

around 1988, after the rules change... Interesting, at least for me.
3 liter DOHC V6
Eletramotive ended up in Carlsbad before Nissan pulled out of the program.

[kenikh]

From the web...

From what I know about the racing history of the 3S-GT engines boost needs
> to be in the order of 1.5-1.7(24-28psi) bar boost to achieve this. Toyota
> originally used a CT44RT Turbo in their 1986 prototype racer at Le Mans
> this turbo boosted 2.5bar(37psi). The engine was rated at 550hp @ 1.4bar in
> 24Hr racing trim and 750hp @ 2.5bar in qualifying trim. These figures were
> achieved with a 2140cc(89x86) engine with a max 9000rpm and 8500rpm in race
> mode. These turbos had twin mechanical water cooled wastegates, I don't
> know that I want this sort of complication.
> In 1987 they switched to a CT44ST which offered 1.8(26.5psi) boost and used
> the RT unit for qualifying. They also increased the cylinder wall thickness
> by 2mm to cure a bore cracking problem( I think it was 2140cc motor, the
> 1998cc unit wasn't produced until 88/89) this engine was rated at
> 680hp/8500rpm and 470 ft/lb torque @ 5500rpm (as much as 900hp had been
> extracted on the test bench).
> The only other info I can find relates to the rally engine which produced
> 380-400hp on restricted turbo (more if you cheated like TTE).
> I believe that the CT44ST is used in GTP racing. Does anyone know where I
> can get one or more info about them? Either that or if you know of another
> unit that will flow the amount of air needed at the required boost.
> My mechanic suggested to me, that given the limited amount of cooling air,
> I might get better results by using series charge cooling i.e. water/air
> followed by air/air would give the best cooling with the least increase in
> intake volume. I have seen an article on an Aussie MR2 with a turbo charged
> 3S-GE and a neat water/air inter-cooler sitting above the cam cover and I
> have enough bits from the parts cars A/C system to make one. Has anybody
> had any experience with this type of charge cooling (it was used on 88/89
> Celicas)?

[jpnovak]

I used to love watching Nissan dominate the IMSA GTP when I was a kid.

[slow&rusty]

Originally Posted by jpnovak

I used to love watching Nissan dominate the IMSA GTP when I was a kid.

+1 and the Paul Newman days

[BURN-BROS]

I met a guy up here in Camarillo that said here worked for Electramotive at the time. A couple of months later, he showed up with a photo album full of pics from development and the races....very cool. Next time I see him I'll see if I can scan some photos.

Back to the turbo, the turbine housing is an odd color, anybody familiar with the look of inconel? It's N.O.S. so it has not been discolored.

[kenikh]

I've got some trash inconel parts in the garage. I'll take some pics.

[BURN-BROS]

Thanks Dood, it's probably just a rust preventative applied to the housing. The wall thickness is pretty substaintial, so I would be suprised if it's anything more exotic than Ni-resist.