[DeTomaso] #9261 is back on the road - short luck

[Jørn C. Olsen]

Hi again Thomas!

I`m not using a thermostat on the oil cooler.
We looped the oil by the engine so it is possible that the oil cooler o 
clogged up.
Thanks for your input!

J.C

----- Original Message ----- 
From: "Tomas Gunnarsson" <guson at home.se>
To: "Jørn C. Olsen" <joernco at online.no>; <detomaso at realbig.com>
Sent: Sunday, June 11, 2006 11:23 PM
Subject: Re: [DeTomaso] #9261 is back on the road - short luck


> Jørn,
>
> Some thoughts: 150 F is on the low side. You want the oil to be around 
> 80-90 C (180-200 F) minimum. Are you using a thermostat with the oil 
> cooler? A high volume pump will not help overcome the resistance of the 
> long oil lines. A high pressure pump will. 5 bar is normal at elevated 
> rpm, 2.5 bar is normal at idle. Is it possible that your oil cooler got 
> clogged up? Did you loop around the cooler at the front of the car or at 
> the engine? Try bypassing the oil cooler but keep the oil circulating 
> through all the long oil lines. This will show if the long lines are the 
> problem or the oil cooler element. At these oil temps the fact that you're 
> using mineral oil instead of synthetic does not explain the phenomenon.
>
> Tomas
>
> ----- Original Message ----- 
> From: "Jørn C. Olsen" <joernco at online.no>
> To: <detomaso at realbig.com>
> Sent: den 11 juni 2006 23:03
> Subject: [DeTomaso] #9261 is back on the road - short luck
>
>
> Need some advice!
>
> On my new setup i used a standard oil pump(not high volume) because my 
> enginebuilder wanted to reduce the stress om the distributor axle. 
> Installed a MSD Pro Billet distributor and MSD 6A. Also installed a oil 
> lamp with "early warning", triggers at about 2,5 kg.  Filled Kendall 20/50 
> mineral oil.
> In the enginedyno and the first and second trip in the car, nearly 5 kg 
> oilpressure.
> Third trip, dropped to 2,5 - 3 kg and stayed there all the time with the 
> oil lamp flashing like a disco light.
> Oil temperature at maximum 150F.
> Went to my enginebuilder with the car and he looped the oil away from the 
> oilcooler and the pressure went up again to 4-5 kg.  Drove (not hard) home 
> with the car and the oil temp went up to 220-230F and the pressure dropped 
> to 2,5 kg again but only on idle. My enginebuilder say we have to install 
> an high volume oil pump again because of the long travel distance from the 
> engine to the oilcooler in front.  He also says i have to use a better oil 
> because of the heat.  I had none of this problems with my previous setup, 
> steady oil pressure at 4 - 4,5 kg, but i used syntetic Castrol Racing oil,
> New test drive today and when the engine and oil got hot, a bang and the 
> engine went dead.  Waited to the engine went cold again and it fired up 
> again.  Came nearly home and the same thing happend again.  Towed it home 
> and now it wont start up again at all.  Am I looking for two separat 
> problems or is it the caused by the same?  Oil pump, distributor, MSD box? 
> The fact that I had good oil pressure the first and second trip confuses 
> me!
>
> For me, i need Prosac!!!!!
>
> J.C.
>
>  ----- Original Message ----- 
>  From: Jørn C. Olsen
>  To: detomaso at realbig.com
>  Sent: Tuesday, May 09, 2006 8:58 PM
>  Subject: #9261 is back on the road after 2 1/2 year in the garage
>
>
>  I took my first trip with it today with a big smile in my face!
>  The engine felt strong!
>
>  J.C.
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