GTV6 cams in 3 litre 75QV
Posted: Mon Feb 18, 2013 5:38 am
.. has anyone tried these cams in said engine?
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Re: GTV6 cams in 3 litre 75QV
Posted: Mon Feb 18, 2013 9:34 am
Should fit but is a serious step back...
Re: GTV6 cams in 3 litre 75QV
Posted: Mon Feb 18, 2013 12:14 pm
... how do they compare to standard 3 litre cams?
Re: GTV6 cams in 3 litre 75QV
Posted: Mon Feb 18, 2013 6:32 pm
The specs that I have on file:
GTV6 Standard
intake 222@0.05, 9.1mm lift
exhaust 205@0.05, 8.9mm lift
3.0 Jetronic
intake 226@0.05, 9.7mm lift
exhaust 206@0.05, 9.2mm lift
3.0 Motronic
intake 230@0.05, 9.2mm lift
exhaust 214@0.05, 9.2mm lift
Motronic is the best option here. SZ cams may be different/better, but I don't have specs on them handy.
For the record, mine has the following, which are very similar to the fabled 10548s used to great effect in the 2.0 Nord:
Intake 234@0.05, 10.3mm
Exhaust 224@0.05, 10mm
This may not pass smog wherever you are, but makes for a fabulously torquey engine that will sing to whatever rpm you care to set your rev limiter to (mine is 6.5 as I am pretty conservative and that's fast enough).
GTV6 Standard
intake 222@0.05, 9.1mm lift
exhaust 205@0.05, 8.9mm lift
3.0 Jetronic
intake 226@0.05, 9.7mm lift
exhaust 206@0.05, 9.2mm lift
3.0 Motronic
intake 230@0.05, 9.2mm lift
exhaust 214@0.05, 9.2mm lift
Motronic is the best option here. SZ cams may be different/better, but I don't have specs on them handy.
For the record, mine has the following, which are very similar to the fabled 10548s used to great effect in the 2.0 Nord:
Intake 234@0.05, 10.3mm
Exhaust 224@0.05, 10mm
This may not pass smog wherever you are, but makes for a fabulously torquey engine that will sing to whatever rpm you care to set your rev limiter to (mine is 6.5 as I am pretty conservative and that's fast enough).
Re: GTV6 cams in 3 litre 75QV
Posted: Mon Feb 18, 2013 8:31 pm
This subject has been disputed several times, here and on the BB. 3liter Motronic cams are identical to SZ cams; they have the same part numbers, 60548163 and 60548164. These cams are used in the late 164, 75 and SZ/RZ.
Jim K.
Jim K.
Re: GTV6 cams in 3 litre 75QV
Posted: Mon Feb 18, 2013 9:54 pm
thanks Jim - I shall update my records!
Re: GTV6 cams in 3 litre 75QV
Posted: Tue Feb 19, 2013 1:48 am
I believe it is 10.1/10.1.GTV27 wrote:3.0 Motronic
intake 230@0.05, 9.2mm lift
exhaust 214@0.05, 9.2mm lift
Re: GTV6 cams in 3 litre 75QV
Posted: Tue Feb 19, 2013 6:03 am
Motronic cams:
IN: 230*@0.05", 10.4mm CAM lift.
EX: 226* @0.05", 6.54mm CAM lift (9.16mm at valve with no clearance)
IN: 230*@0.05", 10.4mm CAM lift.
EX: 226* @0.05", 6.54mm CAM lift (9.16mm at valve with no clearance)
Re: GTV6 cams in 3 litre 75QV
Posted: Tue Feb 19, 2013 1:55 pm
It is true that I can't read specs when half asleep! 
10.1/6.4 according to this:
http://www.international-auto.com/file_ ... /index.cfm
Jim, perhaps your specs are actual 'measured' specs you've done? The above may be factory specs.
Either way, I'll go with yours - I won't even pretend to know what I'm talking about in comparison!
10.1/6.4 according to this:http://www.international-auto.com/file_ ... /index.cfm
Jim, perhaps your specs are actual 'measured' specs you've done? The above may be factory specs.
Either way, I'll go with yours - I won't even pretend to know what I'm talking about in comparison!