[wildrat]

Further information
Now the head gasket I believe is gone
Made the mistake of driving to the bike show in Stagea before I knew about the gearbox fault got 50 miles when after stop gearbox would not change in to top

Motorway so kept to about 60 mph but engine boiled with no warning (not hot on temp gauge) stopped steam under bonnet

AA got me home car still runs but heats up very quick less than 1 mile

Want to tune to aprox 400 Bhp it will have 3” titanium exhaust a Mines ECU and profec boost controller soon bits on the boat so has any one got advice re-makes of head gasket and tubular exhaust manifolds?

 

[kismetcapitan]

I have a brand new unused stock Nissan RB26 gasket, PM if interested.

 

[Andy W]

your problem may be the radiator as the ATF is cooled through the bottom of it