202 FE Holden/Delco Conversion

[FEBlue202]

I agree!
I need a burn, to holden202s bin from his 202 to my VR auto memcal

But first, before I do anything I have to verify my engine spec with holden202s engine specs and his posted bin for this engine.
And it is definitely will be a temporary measure until I get proper tune.

I my engine spec is,
Stage 2 (205) Duro @50 217/217 Valve Lift 448/448 (Dynotech Cam part number cm205d with sae valve timing (@ .006" valve lift)
inlet opens(btdc) Open 30° closes(abdc) Close 70° Duration 280º (o), Lift .448" (11.37mm)
exhaust opens(bbdc) Close 70º closes(atdc) Close 30º Duration 280º (o), Lift .448" (11.37mm)
YellowTerror: Street terra (bolt on non adjustable) roller rockers: Part details: ST 2007 Hydraulic Lifters)
Compares with
XU1 Specification Camshaft Specifications GTR XU-1 202 Bathurst 72 & 73.
1973 Factory Bathurst XU-1's had same profile as the previous year, however the race teams were free to use any profile they desired.
Inlet (No ramp) Open 55° Close 91° Duration 326° Lift .456" (11.59mm)
Exhaust Open 94° Close 51° Duration 326° Lift .456" (11.59mm) Overlap 106°

Trust that clarifies things, and maybe 'holden202' will post a comment or two, and I can progress this a bit further.

[Holden202T]

what injectors are you running ? i had vr v6 ones in my tune i think from memory. they are pretty much the same as the stock VK EFI ones so either or should probably get you in the ball park.

btw i would probably not bother with the knock sensor on the 202, i doubt it will work reliably ....

i guess compression ratio might play a part in it, if you have higher compression than my motor did you might get pinging with the timing map in it ... i think from memory that motor had about 9.6:1 comp.

the camshaft you have listed is probably a bit bigger than what i had in mine, but i reckon it will probably be a hell of alot better than the v6 tune your using now

[FEBlue202]

Holden202, thanks for the advice on my 202.
To answer your questions.
I am using new V6 injectors, and engine compression is standard (new unleaded valves - not ported/polished), am running 98 Octane Premium Unleaded fuel.
I am guessing that vacuum would be about the same as yours at idle, so your tune would be close (if not spot on)
The knock sensor is screwed into to waterjacket (under manifold between pistons 3/4) and might be doing required job, so I will leave it connected for time being.

Think I am ready for a $12P bin on my spare VR Memcal.
Just can't do it myself. Help

[VL400]

WIll send you my post details in a PM, send over the memcal and will load holden202s bin to it

[Holden202T]

well the main difference i can see will be the difference in heads, mine was fairly ported and that will make things a bit different in flow, but either way my tune should get your engine running pretty reasonably so you can atleast drive it and get things sorted more for there.