Maybach_Man

So why isnt the cooler on the side of the rad and the one under linked, like the auto trans cooler on the other side...or are they?????

Maybach_Man

Thats funny right there!!!

dprantl

Because the later cars don't come with the oil cooler in the radiator in stock configuration.

Dan
'91 928GT S/C 475hp/460lb.ft

Alan

BTW I also do have the C&R all aluminum radiator (with side tanks). I have never had any water temp issues - there seems to be plenty of excess capacity in the C&R. When I added the side tank oil cooler it made basically no difference to water temps.

While I had this issue I did experiment with declutching to engine idle while at speed - not a major issue then - always clearly worse when stopped at idle - takes a few momemts after slowing to a stop for it to drop off.

Alan

mark kibort

i get it, you see brian gets it too (over 3 bar for idle and HOT different gauge, but stock sending unit.).. so, what are you guys guaging your discovery on ?? ive had 5-6 race cars and street cars , all run over 3 bar hot oil pressure. BUT, all of them are running near 1000rpm idle so that is the possible difference.

all i know is that all of these cars, running amsoil, in 110+ temps, on the race track with oil temps up over 260F during a race and over 240 by the time im in the pits, the oil pressure is 3 bar min. (at 1000rpm)

dprantl

If your cars all idled at 1000 RPM, then of course that would be the difference.

Dan
'91 928GT S/C 475hp/460lb.ft

Maybach_Man

hi dan

so would there be any advantage in connecting the two up??

JDY928

Hi All,

Are there any issues with these in rad coolers leaking? I have the rad with the coolers both sides, for transmission too.

Regards,

Jed in Sydney
83S RHD Kiln Red

dprantl

Yes, that is what is being proposed in this thread. I don't think there is any down side to having both the radiator cooler and external cooler in series, it can only help.

Dan
'91 928GT S/C 475hp/460lb.ft

MarkRobinson

Agree with Dan. On both my street & track turbo 928's I have rear oil coolers: actually have mocked up a proto kit that works whatever cars will accommodate, so far only fitted on an 82, 86.5 & an 88, but have a GT in for a turbo so will test it there too. Basic oil cooler, fan, 20' of -10an line, fittings to replace the radiator oil cooler. Sits in Driver's rear tire well. Hasn't been hot enough to verify how well it works, but should suffice.

blown 87

I agree, GB is going to sell me a under radiator cooler if he ever gets it off of the car it is on.
It simply can not hurt.

mark kibort

this is probably the major difference.

possibly why my cams dont pit either.