rsr91128

Man, I would love to have an extra build project to have for the next year or so to play with.

Thanks for sharing, your progress looks great.

e3photo

Thanks Eric.

It is great to have a second engine to work on during the winter. I bought it as a long block with a few boxes of parts, so now it will be liking putting a puzzle together and seeing what is missing. It is very educational, and a blast.
Everyone needs an extra engine.

Emerald

axl911

Normal rebuild? You're not upgrading? If I have a 2nd engine to putter around with, I would dream of 3.8, rs cams + valves, ported heads, custom exhaust....

e3photo

I didn't feel like 3.8 was worth it, but I did go with RS intake valves and RS cams
I will probably run a sport exhaust system. Nicely warmed for street.

Emerald

Mike J

Ok, that might make a difference...what is the expected timing for the RS cams? The must be different than the stock cams?

When I did mine, I did the analysis, and could not justify any of the upgrades but I will admit the RS cams/valves were very close.

Cheers,

Mike

e3photo

Yeah, I had posts on here and Pelican, and I came to the conclusion that the cost to go to 3.8 just was not worth it. I did feel like adding the RS intakes and cams was worth it. I went with 1.26 for timing on the RS cams.

Emerald

axl911

Okay...next question.....are you thinking of going to a Motec to really extract as much as you can from that motor?

axl911

Here is some more valve timing info on the 964 site...still nothing on 993 stock cam though.

Mike J

As far as I know, the stock 993 cam timing has never been published. Porsche assumes you are using the factory tools to align the cams, not the old style method. It does not appear in any of the technical booklets, shop manuals, or anywhere I have found. I used the 1.0mm number as confirmed from Gerry Woods (when I took his engine rebuilding course) and by "camgrinder" of Pelican parts.

Where is this "964 Website"?

Cheers,

Mike

axl911

It's one of the thread on 964 Rennlist.

Mike J

Oh, got it...thanks!

jhummel68

Emerald,
It looks like you are making some great progress. I'm sure others will be referencing your thread as more go through an engine rebuild. Fantastic work and I look forward to future posts.
John

e3photo

Thanks John,

It is a fun project. I am now trying to see what parts are missing, so I will have a better understanding of what's where when it is over.

Emerald