Hi,
I think the oil pressure as reduced is fine, the aim is not to get as high a
pressure as possible but a consistent pressure in the median department as
you have now. It probably is worth noting, that if you have high pressures
your oil filter gets bypassed.
As to the oil feed, well, a matter of taste, it has been reported before to
lead to
that kind of problems.
HTH,
Gernot
> ----------
> From: cameron greig[SMTP:tr6greig@globalnet.co.uk]
> Reply To: cameron greig
> Sent: Friday, June 25, 1999 10:22 AM
> To: triumphs@autox.team.net
> Subject: Update on smoking TR6
>
>
> Hi all
>
> I thought I would let you all know how the problem with my TR6 was finally
> resolved.
> The car was using oil,but only produced smoke when starting,either from
> cold
> or if restarted hot,little or no smoke was visable during acceleration or
> over run.
> The head had been rebuilt 5000 miles ago with new valves,springs,and
> guides,and the cylinder compressions are all 175 with only a 2psi
> variation.
> The car was also fitted with a secondery oil feed to the head and runs
> with
> a high oil pressure (100psi+ at cold startup droping to a min of 70psi at
> hot idle).
> I felt that the problem was due to a combination of the high oil pressure
> and the secondary oil feed,producing a large quantity of oil and oil
> vapour
> ,which was on standing seeping past the valve guides and being burned off
> when the engine is fired up.
> I decided to reduce the oil pressure by shortning the oil relief
> spring,this
> resulted in a 70psi at cold startup to a min of 45psi at hot idle. I have
> also removed the secondary oil feed for the moment. My question to you all
> is now that I have found the cause do I run with lower oil pressure and no
> secondary oil feed or should I use one of the other possible combinations
> ie
> high pressure no feed,or maybe low pressure with feed,all constructive
> comments welcolme.
>
> Cameron
> 71 TR6 150bhp
>
|