Mythbuster: continuing project thread of my 1303 '75 - Page 80

effvee · #1 March 26th 2015, 08:52

Quote:

Originally Posted by Wally

Man, that CNC technology, wow that's just so nice

effvee · #2 March 26th 2015, 12:23

Quote:

Originally Posted by effvee

Man, that CNC technology, wow that's just so nice

Question, I note that you are at the stud holes, what's the max cylinder size those heads can go up to?

Wally · #3 March 26th 2015, 14:40

Mark, my valve size (remember mine is just a 98mm bore engine) will be 48x41. Nigel's engine (103x82, as you see in the above pics) has 50x41mm valves.

Francelle, these have stock type 4 pattern and size holes, so what you think is smart/safe to use as a max bore size is entirely up to you. same goes for valve size..

70Turbobug · #4 March 25th 2015, 17:31

Looks great! What will your valve size be?

graham · #5 March 26th 2015, 01:47

I'm surprised to see you fitting cheap Chinese aftermarket parts to your car Walter

.

Lol,As always impressive stuff going on here. It never ceases to amaze me the amount of expertiese and craftsmanship some people are capable of producing.

.

70Turbobug · #6 March 28th 2015, 12:19

The best surface after porting is to sandblast the port.

70Turbobug · #7 July 17th 2016, 10:14

Looks fantastic!

cookvw · #8 July 19th 2016, 13:49

looking awesome as always wally!

chug_A_bug · #9 July 29th 2016, 21:45

Very nice.. can't wait to see it all built..

Wally · #10 August 13th 2016, 12:58

The (Pauter) rods and straight cam timing gear are ordered, so I should have all parts for the long block in a month or so

effvee · #11 August 13th 2016, 13:17

Quote:

Originally Posted by Wally

The (Pauter) rods and straight cam timing gear are ordered, so I should have all parts for the long block in a month or so

Wow, didn't know, they allowed porn on this site

. Very nicely done.

Bad bug · #12 August 13th 2016, 14:26

Quote:

Originally Posted by Wally

The (Pauter) rods and straight cam timing gear are ordered, so I should have all parts for the long block in a month or so

Walter is this a ortech shroud.

Wally · #13 August 13th 2016, 16:06

Yes, its an Orratech system. It wasn;t designed for type 1 exhaust port heads though, but thats easy.

The disk hat is original Porsche, but off-set is a few mm short.., so it doesn't work/fit at the moment and I need to adress that issue as well before I can drive again.
The off-set problem is not as simple as it sounds to be though.

On the positive side, I did find the other caliper!

cookvw · #14 August 17th 2016, 10:05

looking awesome wally. cant wait to see this motor running and see what it will put out for power.

Wally · #15 December 9th 2016, 18:52

Well, since the rods aren't still here yet, I'll thought to start om making the yellow calipers work.
It didn't.. the bolt spacing is bigger (142mm as opposed to the regular 130mm).

So, I started thinking of other solutions.
I kinda strayed towards using the original 996GT3 bearing carriers so the whole thing would fit. That just means adapting all other 3 fixation points: (shocks, tie rod and lower control arm).

Here was a test fit with a rear 996/986 wheel bearing carrier (front and rear are basically the same casting):

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