Spider Turbo Vortex AWD cam specs ?

[discopotato03]

Hi all , am rebuilding one of these engines and would like to know the cam specs . There is an 8 on the shaft section , no middle ring and 1 third section ring . Can anyone identify these cams and BTW its a late 87 build and an Australian spec car .

 

Thanks , Adrian in Aust .

[idosubaru]

did you try searching? this has been talked about before. i recall inconclusive or contradicting information on the cams. then there's also the issue of whether or not the aus spec is the same as the US market?

 

might want to try "cams" as "cam" won't work with the search engine since it likes more than 3 letter searches.

 

deltacams in washington state regrinds Subaru cams and should probably have some good information on them, maybe they would help if you gave them a buzz?

[idosubaru]

for instance, here are some cam specs on the first thread i clicked on after a quick search:

http://www.ultimatesubaru.org/forum/showthread.php?t=73786&highlight=cams+lift

[discopotato03]

Actually yes I have been looking , I just thought possibly someome may have been able to identify these cams from the details given which I will again .

The manuals (factory) say there is a three part or A/B/C description on EA82 cams . Where they say there shoul be an "A" is an 8 . In position B there is no ring and in position C there is a ring .

 

I'll bring you up to speed with Australian spec carb and MPFI/T cam specs , we didn't have SPFI EA81's or 82's in Australia .

 

These are 87+ and FI are hotwire types .

 

1) Carb ........10-54 49-15 9.0 CR .

2) MPFI N/A...16-60 60-16 9.5 CR .

3) MPFI-T ....14-56 56-14 7.7 CR .

 

This 87 FSM also shows another two profiles in the two "Others" parts meaning I think MPFI and PPFI-T with out catalyst (cat) .

 

4) ...............16-64 60-20 9.7 CR .

5) ...............12-58 60-16 7.7 CR .

 

Also their identification marks .

 

.....A...........B...........C

 

1)..A...........0...........0

2)..A...........1...........2

3)..A...........0...........1

4)..A...........0...........3

5)..A...........1...........1

 

I would say that the Others or possobly not Cat Turbo profiles would be the best and looks to me like the Na Spider exhaust lobes with the MPFI-T lobes advanced 2 deegrees - possibly to close up the overlap a little .

 

I should explain what I'm trying to achieve here and please dont suggest EJ conversions because I'm NOT interested , also we can buy 92/95/96/98 and 100 oct fuel at the pump here .

 

The car is an 85/86 L RX Turbo and I want some guts from it without major feats of re engineering . So the base rebuild engine is a late 87 Aust spec AWD Vortex spider turbo one because they are the highest spec EA82 we got and are bloody rare here as well .

I want to use 9:1 CR pistons and will ceramic coat them if necessary . I also want good cams and I believe I can improve (replace) the std header (which as we know is a dogs breakfast) and remove a lot of the factory supplied exhaust restrictions . We also know that with a hybrid style turbo mount flange std or later turbos will bolt up and I'll look into the Forester BB turbo eventually . I want this thing to have good punchy torque and not at 5000 rpm . So good cams/porting/exhaust manifold/9 CR pistons should make a bit of an entertaining RX thats looks pretty std and uses externally mostly emissions compliant parts . We don't have your smog tests - yet .

I also have 280ZX or FJ20 turbo injectors in mind and an interceptor to make them work .

I will beat the spider TPS/3 plug ECU issue and hope to use the later optical CAS and a programmable ignition computer to get the sparks when they'll do the most good . I refuse to use aftermarket EFI computers because I hate MAP load sensing , been there done that .

 

Cheers A .