Do diesels need back pressure to start?

[Tubbs]

Hi guys quick question, do diesels need back pressure to start?

Ive had to change a head gasket for a 2H and in the process ive snapped a couple exhaust manifold studs which I need to repair tomorrow. So Ive put the rest together and tried to start the car but the batterys are flat. So while Im charging them should I be connecting the exhaust up for the backpressure and remove it later for the repairs?

Cheers

[oldmate]

Nope. Diesels run better with no back pressure. Any back pressure will negatively affect the performance, both maximum power and torque curve.

[Tubbs]

Thanks for quick reply.

Will update my cactus 2H post when batterys are charged. Im not holding my breath but Im finally glad I got the time to put it together again. Its been a real mission and the bastard head has been fighting me every step of the way, and then the car joins in by giving me no juice to crank.