danglerb

If one of those people unhappy with the hybrid motor speaks up perhaps I can help them out of their dilemma.

I know it "sounds" kinda funny, but I think I really want a different balance in the HP, more than it has now at like 180 rwhp, but around 300 rwhp sounds like it might suit me. If I want faster than that its WAY cheaper to do in my Mustang without turning a 928 into a street rod.

Daniel Dudley

You are an 86.5 kind of guy, chipped and X'd.

danglerb

Actually I have no idea why I am not driving a 9 year old Volvo. Hopefully I won't remember.

John Veninger

It's called GT2 vs. GT1 in club racing.

mark kibort

i think you want some big hp gains. I say bolt on a blower! set it at 10psi and make your 400hp!

MK

hacker-pschorr

You missed the part where he said this is a street car

Rich9928p

944 heads use the same LARGER valves as the EURO S motors. With some grinding and thinking, these heads can be used on a 928 - at least for the track - my mechanic is building his track car 928 using these heads for his track car.

You still need the beefier EURO S cams - or as some have done a custom weld job to change the US cams to Euro spec.

US 16 valve engines are lower compression. You either use a blower to force in more air or change pistons to get higher compression.

DK

I have a set of Euro S (80-83) cams not in use right now and I will sell. PM me if interested.

danglerb

PM sent.

I've been doing some searching to see if 944 cam cores are available that could be custom ground for a 928, which I have been told will support more go than the Euro S cams, but nothing reliable yet.

hacker-pschorr

The firing order of a 944 is different than each bank of the 928 motor. Installing a cam that will open the intake valve during combustion is not grindable. That is unless you plan on totally removing every lobe and rebuilding the cam. If that is the plan, you can start with any 928 16V cam.

Vilhuer

If raw casting of cams have lobe area similar round thing as bearing area it would be possible to make both 944 and 928 cams from same core.

H2

What about the poor next owner/next mechanic that inherits a radical hybrid 928 engine to work on? Nightmare!? It's complicated enough already. I'd opt for a completely different (stock) engine and/or add a forced induction system that could be easily removed by the next owner if they wanted.

H2

hacker-pschorr

Correct - so if you are going to take 944 cams & grind off the lobes to completly rebuild them, it doesn't matter what you start with (944 or 928). With 16V 928 cams in large supply, why searchout 944's?

John V

When I was looking into 944 heads for my 928, I was told that I had to use my 928 cam towers and cams due to the 944 lobe spacing (which I presume is established by the core blank). I took it that the lobes are spaced differently in addition to the firing order isuue.

Imo000

That wil be the next owners problem so it doesn;t mater. If it really is that radical then it will take the right buyer to sell the car and thsi will nto be an issue.

Most hybrids are not that radical. 5L short block (looks and works the same as a 4.5L or a 4.7L). Euro heads/cams look and work the same way as the US parts. Most hybrids retain the stock injection systems so that wont be an issue. Also almsot all parts of the 928 have part numbers on them so finding a replacement is shouldn't be a problem.

If I hd a choice, I woudl go for an all motor high HP 928 as opposed to a boosted one.