Bill Verburg

Bruce Anderson has what I believe to be a typo in his latest 911 handbook in that there are 2 M64/22 engines listed, my references are solid thru '95 but spotty after that soooo......

Can anyone confirm or correct the following data?

• '96 on M64/20 is the ROW 3.8 Carrera RS w/ 51.5/43.5 valves 43/39 ports
• '96 on M64/21 is the ROW 3.6 Carrera(manual trans) w/ 50/43.5 valves and the same ports as M64/20
• '96 on M64/22 is the ROW 3.6 Carrera (tiptronic trans) w/ 49/42.5 valves and the same ports as M64/20

Is there an M64# for a ROW increased output 3.6 Carrera which uses the RS cams?

Viken

[quote]Originally posted by Bill Verburg:
<strong>Is there an M64# for a ROW increased output 3.6 Carrera which uses the RS cams?</strong><hr></blockquote>

AFAIK, there was no such engine. The 20, 21 and 22 were the only ROW normally aspirated engines.

Bill Verburg

Viken Thanks! I was wondering if maybe some sort of Cup type engines might have been built.

Looks like a typo on pg 112 of the second ed "Performance Handbook" then.

Viken

[quote]Originally posted by Bill Verburg:
<strong>Looks like a typo on pg 112 of the second ed "Performance Handbook" then.</strong><hr></blockquote>

I don't have the book with me. What's the typo?

speedster 94

hallo
I have seen that in the Book too and after discussing it with 2 Friends ,wanting to buy a Engine (64/22) from me ,i called Porsche and the Book is wrong . There was no Option for more output except the 3.8 Liter Kit with bigger Valves
and 300 HP. And 2 more things would not make sense
They would upgrade the Tipo Engine to make up for the Powerloss in the TipoTrans not the manual Engine .
Why would you offer the 3.6 with the same HP than the 3,8 ?
harald

Bill Verburg

The typo appears to be the first listing for an M64/22 Carrera ROW 993 Increased output for manual transmission w/the RS cams

The second listing for the M64/22 is the usual ROW tip w/ smaller 49/42.5 valves.

Danke Harold!
<img src="graemlins/beerchug.gif" border="0" alt="[cheers]" />

Can you(or anyone) confirm the larger 50/43.5 mm valves on ROW M64/21 for manual trans vs US M64/23 49/42.5 mm valves for manual trans?

Viken

[quote]Originally posted by Bill Verburg:
<strong>The typo appears to be the first listing for an M64/22 Carrera ROW 993 Increased output for manual transmission w/the RS cams</strong><hr></blockquote>

I think there are many typos and/or inaccuracies in Bruce's book.

Viken

[quote]Originally posted by Bill Verburg:
<strong>Can you(or anyone) confirm the larger 50/43.5 mm valves on ROW M64/21 for manual trans vs US M64/23 49/42.5 mm valves for manual trans?</strong><hr></blockquote>

Can't confirm the sizes but /21 and /23 have the same valves while /22 and /24 have their own set of valves. In other words, ROW and US cars (6-speed and Tip) have the same size valves.

Bill Verburg

Viken, are you saying the manual(ROW21&USA23) and tip(ROW22 & USA24) have different valves?

Checking PET I see only 1 Intake & 1 exhaust listed for all 4 engine types.

Morgan also has a reference to an enhanced engine option for both tip & manual. He lists it as a 3.8 option available for manual as M64/21S and as a 3.8 option for tip as M64/22S. Either developing 300hp@ 6500

Viken

[quote]Originally posted by Bill Verburg:
<strong>Viken, are you saying the manual(ROW21&USA23) and tip(ROW22 & USA24) have different valves?

Checking PET I see only 1 Intake & 1 exhaust listed for all 4 engine types.</strong><hr></blockquote>

Sorry, my mistake. I got confused between the 272 HP and 285 HP engines and manual and Tip. You are right, all four engines have the same intake and exhaust valves.

[quote]<strong>Morgan also has a reference to an enhanced engine option for both tip & manual. He lists it as a 3.8 option available for manual as M64/21S and as a 3.8 option for tip as M64/22S. Either developing 300hp@ 6500</strong><hr></blockquote>

Well, that was the same engine as the M64/20 found in the RS. I wonder why they are labelled as 21S and 22S.