2.7 build question

[10zz964]

hi all,
i am about to rebuild my leaking like mad 2.7. this will go into my 66 swb street mostly and a little bit of track.
after reseach (thanks Noah!)i have some idea of what i wand to do.
i already got 40mm webber, s cam
so i am going to order a set of JE 90mm 9.8:1 comp piston.
do i need new cylinder if my old one are in good shape?
do i have to use nikie cylinder? and if i do why?
any eles i should look out for?
cheers and thanks you

[356RS]

OK,

90mm JE's at 9.8:1; S-cams; 40mm webbers.....good start.
Now you need to do a few things.
Your leaking 2.7 case should be sent to a GOOD mech. shop that knows PORSCHE engines, checked out and rebuilt as necessary. They will know the weak spots of the 2.7 case.
If you have 90mm nikies thats good. Have them checked out, and if they are in good shape and in spec. then you can give that information to JE and order pistons. But wait....How are the rest of your engine parts? Crank, rods, oil pump, intermediate shaft, etc; etc. I could go on and on......
Get yourself the book by are host, Wayne Dempsey called "How To Rebuild & Modify Porsche 911 Engines" It's all there. Everything you will need to know. Read it and then ask your questions here and help will be on it's way.
Sounds like a fun engine your planning.

[kodioneill]

rule one:get wayne dempsey's book
rule two: see rule one

i would only let walts shop, competition engineering inspect the case. they know what's going on.

[10zz964]

thanks guys the problem is i am in south east asia! so no excess to those great shop.
but i did got wayne book!
open the engine yesterday, look like i am going to be needing both piston and cylinder, my engine come with Alusil cylinders. everythings eles look like it's in good shape. all the stud are still intact.
i will do more homework
thanks