TonyG

Who knows the sizes of the stock 951 intake and exhaust valves?

Thanks...

TonyG

Nobody here knows the dimensions of the stock 951 valves???

Amazing!

Jfrahm

I think it's 45mm intake, 40mm exhaust.

-Joel.

Jfrahm

EDIT: I have heard the Turbo S valves are larger in DIA, but it might refer to the stem. Any detail on that?

-Joel.

emilysgranny

Tony ; 85-88 m 44.52 intake is 45 x9 x110.1 951 105 415 00
exhaust 40 x 9x112.4 951 105 416 07

TonyG

emilysgranny

So that's non turbo S = 45mm intake & 40mm exhaust.

Do you have the specs for the turbo S sizes..

Thanks a bunch BTW for the info..

emilysgranny

Tony ; my book makes no distinction between the 220 hp and the 250 hp . ( turbo-turbo s). in 88. I will check the pet #'s in a min for you. The t s were only 87-88 if I am right.

TonyG

This is interesting because I have a head from a race engine wich is 2.85 liters. It's got all the trick stuff done to it, and the guy spent a ton of money to build it.

The head has exhaust guides like I've never seen before, and the intake guides are real short and barely protrude into the intake ports. Also, the valve spring retainers are unlike I've seen before (at least on one of these engines.

The measurements for the valves (taken installed in the head... so they might be a "hair off" are:

Intake: 46.0mm
Exhaust: 40.9mm

tazman

The turbo s was only 88 and the 89 on have the same specs.

emilysgranny

Tom ;my pet says my 87 but that does'nt surprise me that they sold it in 88. Correct me if I am wrong ,but there was an 89 n/a 2.7, turbo 2.5 and an S2 3.0l. Did they classify the 89 turbo as an s

Duke

No, but the Turbo S -88 and Turbo -89-91 have the same engine code: M44/52.

bdellis

Tony,

If you can wait until tomorrow night I can give you the exact info. Im in NJ now and cant get to them to measure