Running in advice please
Discussion
I am in the process of a partial engine rebuild on my B235 9-5 petrol aero.
Occasioned by evidence of a failing head gasket (cappuccino in the water header tank), I have had the head and manifold gaskets replaced, the timing chain set replaced (badly worn and stretched), the head skimmed, the valves re-seated, stem seals replaced, bores and pistons cleaned and the piston rings replaced, and the 18 crankshaft shells replaced. The car had been using a lot of oil, and the necessity of most of the jobs became evident when the heads came off.
My friend and TVR expert is doing the work and would like to know please:
1. What running in oil should he use? He would normally use a thinnish mineral oil in a TVR Rover V8, but is concerned in case this should be different in a turbo engine.
I would like to know please if:
2. The running in procedure is similar to the TVR - up and down the gearbox between 2000 and 4000 rpm, no steady speed cruising, no labouring the engine, for 1000 miles, then an oil and filter change to the normal 0 or 5 w40 fully synthetic.
Much to my surprise, the mph per 1000 rpm through the gears on the Saab and on my TVR are almost identical - I had always thought the gearing on the TVR to be lower than normal, to help the fierce acceleration (0-60 in around 4 seconds)
Occasioned by evidence of a failing head gasket (cappuccino in the water header tank), I have had the head and manifold gaskets replaced, the timing chain set replaced (badly worn and stretched), the head skimmed, the valves re-seated, stem seals replaced, bores and pistons cleaned and the piston rings replaced, and the 18 crankshaft shells replaced. The car had been using a lot of oil, and the necessity of most of the jobs became evident when the heads came off.
My friend and TVR expert is doing the work and would like to know please:
1. What running in oil should he use? He would normally use a thinnish mineral oil in a TVR Rover V8, but is concerned in case this should be different in a turbo engine.
I would like to know please if:
2. The running in procedure is similar to the TVR - up and down the gearbox between 2000 and 4000 rpm, no steady speed cruising, no labouring the engine, for 1000 miles, then an oil and filter change to the normal 0 or 5 w40 fully synthetic.
Much to my surprise, the mph per 1000 rpm through the gears on the Saab and on my TVR are almost identical - I had always thought the gearing on the TVR to be lower than normal, to help the fierce acceleration (0-60 in around 4 seconds)
This chap will have some advice - I hope he would reply to your enquiry - http://www.serioussaab.co.uk/main_pages/contact.ht...
Your rebuild is pretty routine to him I think
http://www.serioussaab.co.uk/Procs_pages/proc_page...
You`d also get good advice from UKsaabs forum &/or Saabnet (USA based)
Your rebuild is pretty routine to him I think
http://www.serioussaab.co.uk/Procs_pages/proc_page...
You`d also get good advice from UKsaabs forum &/or Saabnet (USA based)
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