968 turbo rs replica
#1
Racer
Thread Starter
968 turbo rs replica
Hello ;
I'm building a turbo rs replica using a 1993 968cs as a base and a 944 turbo s as a donor car.Most of those who already made the conversion use the 2.7L cylinder head on the 3L block because it fits whitout any machine work .I do not have a 2.7L head and finding one isn't easy .Can I use the 951 head (making the needed adjustments )and what kind of differences will it make in hp and/or torque?
Thanks for the help
Filip
I'm building a turbo rs replica using a 1993 968cs as a base and a 944 turbo s as a donor car.Most of those who already made the conversion use the 2.7L cylinder head on the 3L block because it fits whitout any machine work .I do not have a 2.7L head and finding one isn't easy .Can I use the 951 head (making the needed adjustments )and what kind of differences will it make in hp and/or torque?
Thanks for the help
Filip
#3
Rennlist Member
You can use a 951 head. You will have to modify the water jackets. Lindsey Racing offers such machine work. The valves will be bigger in a 2.7 head so you will make more power with a 2.7 head.
Raj
Raj
#5
Racer
Thread Starter
Surfing this forum (I'm new here) I also found a couple off supercharger kits (sfr and ninemeister) are these a good alternative to the turboed 968 ? they apear to be less expensive andeasier to instal or am i wrong ,has anyone any experiences with speedforceracing?
#6
nm
Regards,
Regards,
Last edited by User 41221; 01-06-2010 at 11:25 PM.
#7
Racer
Thread Starter
I made my decision to go for the 8v turbo option ,but i'm still not sure about the head as I understood the 944 2.7l head has bigger intake valves ,sinds I'm planning on installing new valves +valve seats anyway can't I just put bigger intake valves in my 951 head?
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#9
Racer
Thread Starter
Ok I must find me an 944 2.7L head ,but to get one of those it seems like i will have to buy a complete car.I just spoke with Tim at SFR and he sugested that the 16v head 3L is a valid option too.Any opinions ?
#11
RL Community Team
Rennlist Member
Rennlist Member
I have a spare 2.7L head for sale. It has turbo valves and springs already too!
I think the 8v turbo is a great choice for lots of torque and burning rubber. And I can give you some advantages of a 2.7 head over a 2.5 head: It has larger intake valves, the correct bore, it bolts on, and it has no ceramic liners in the exhaust ports which always break off and can kill the turbo.
Just to be fair, the 2.5 head has advantages too: It can be cheaper to buy a 2.5 and weld it, than buying a 2.7. Also, 2.5 intake valves are much cheaper than 2.7 intake valves. But both heads should use the 2.5 turbo exhaust valves.
I think the 8v turbo is a great choice for lots of torque and burning rubber. And I can give you some advantages of a 2.7 head over a 2.5 head: It has larger intake valves, the correct bore, it bolts on, and it has no ceramic liners in the exhaust ports which always break off and can kill the turbo.
Just to be fair, the 2.5 head has advantages too: It can be cheaper to buy a 2.5 and weld it, than buying a 2.7. Also, 2.5 intake valves are much cheaper than 2.7 intake valves. But both heads should use the 2.5 turbo exhaust valves.
#15
Rennlist Member
Ceramic liners are there to stop heat energy from dissipating, and transferring them to the turbo which helps spool the turbo. It is also better for emissions because it lights up the catalysts quicker. The bad part is that you can't do any port work on them and if the ceramics can chip off, as stated and kill your turbo.
Jon Milledge, a very well known tuner prefers non turbo heads for this very reason.
Raj
Jon Milledge, a very well known tuner prefers non turbo heads for this very reason.
Raj