Club 80-90 Forums

Whats generally accepted as max/top revs to drive a tdi at?

Currently 2800rpm is 100kph/62 ish mph. usually sit at 3k with occassional jaunts up to 3.4

ideas?

Up to 3600 I believe.

I normally sit between 65-70MPH 3000 -3250 with the gearing I had. Seems happy.

New gearing will achieve 70MPH at 2950.

I think the Max RPM is 4500 well thats what the golf it came out of had on the rev counter ? mine will rev to about 4800 in fourth. Need a built box

Usual rule of thumb is wherever the redline starts on the donor instrument pack, it's still safe all day up to that point. Most diesels won't burn fuel efficiently over 4500 rpm (the burn rate is too slow, so it's just going down the exhaust) the odd Luton 1.9 will run to 5k but it's just caning the motor for no benefit and irrelevant to this discussion.