ca18det

[Satsuma]

Hi all those of you that run the 1.8 turbo nissan engine, I have been told to use a fuel additive. Is this correct?

[CNHSS1]

The SS1/SST/Sabre turbos used the CA18ET which is the slightly earlier 8v version of the DET but the answer is no. Std unleaded is fine but obviously super unleaded or V power will give more power and better detonation resistance if you are upping the boost

[Satsuma]

Apologies. the motor is the CA18ET running with the silvia box, and propshaft and then mated to a triumph 3.63 diff. With this set up the car is running at about 3700rpm at 90mph and i would like to reduce the revs, am i right in thinking that the ss1 runs with a 3.92 ratio? i could swap the 3.63 for a triumph 3.27 off the shelf, quickly and easily, any further suggestions as to help reduce the long distance cruising rpm?

[CNHSS1]

yeah thats right the std SS diff is the ford 7" 3.92 although a common mod is to fit a ford 3.6 (LSD) which improves the geraing and obviously improves the cars cruising ability. 3.27 diff would give lower rpm at 90mph but may hinder the cars sporty accelertion a bit...