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Akila 08-01-2008 07:01 PM

Injector Blocks
Having some Euro SC heads redone. I would like to have the intake matched to the heads, but do not want to run & port the plastic blocks. I read the post on the inlet spacers & a couple of sources for aluminium injector blocks. Any other suggestions & or sources?

nocarrier 08-01-2008 08:05 PM

I am going through the same problem. After some careful consideration, I decided not to use the after market aluminum blocks. I believe Porsche used the phenolic intake blocks to keep heat from being absorbed by the injectors. I predict hot start problems from leaking injectors due to the heat.

My intake and heads were ported by someone else and my injector blocks were bored out.

Some people say that Porsche used the 32mm spacer to increase velocity at low end and help with off boost torque.

I've also heard that a few 930s's came with 38mm blocks. It makes me wonder why Porsche used those if there was the issue of off boost torque. Maybe they saved the good stuff for the "s" model? I'm only speculating here and using deductive reasoning for my own choices.

Personally I think the off boost torque can be helped by using a better ignition curve and camshafts. I haven't gotten that far yet so I can't speak from my own experience.

Anyway, I ended up boring new injector blocks to 36mm to better match what was already done to the engine.

If the crack they crack. However, the old ones that were previously bored cracked and the very bottom where the material is thicker. So, go figure.

x98boardwell 08-01-2008 08:20 PM

Neil Harvey at Performance Developments in CA. He at one point was making these style injector blocks and has the molds to make them again if needed.

Hope this helps,

turbodog 08-04-2008 09:33 AM

I had a problem sourcing these. I found them here
They can make custom sizes and come with phenolic blocks for insulation. Good luck with your project.

Craig 930 RS 08-04-2008 09:21 PM

Great information!
Perfect, I just may do this in the near future.

Akila 08-07-2008 10:14 AM

Used the suggestion from Turbodog & went with the Turbocraft injector blocks. Talked to Chris over there, exactly what I needed. Has Phenolic spacers with the Aluminum Block on top that holds the injector. Made size specific as to my application. Cost some $$ but what is new? Will post pictures after they come in.

Akila 08-08-2008 06:26 PM

Here are pictures. Thing of beauty. Also, ordered on the 5th, received on the 8th & I am in Hawaii. Talk about fast. These are the Turbokraft Blocks in 38mm.

NathanUK 08-09-2008 12:27 AM

They look great!

TurboKraft 08-13-2008 11:22 AM

Thanks for the kind words, Akila!

nocarrier 08-13-2008 02:37 PM

Those look very well made! If mine crack (fingers crossed) I will probably end up getting a set of those as well.

iamchappy 08-13-2008 08:14 PM

There website has been dead for over a week, what did those injector blocks run you..$

Akila 08-13-2008 08:28 PM

With shipping 5ish.

iamchappy 08-13-2008 08:57 PM

Less than a hun a piece and never crack, sounds sort of reasonable to me, half of that would be a slam dunk deal .. .. thanks!

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