What size oil cooler? - Engines Forum - Peugeot 306 GTi-6 & Rallye Owners Club

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Subject: What size oil cooler?

craig903

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Location: whitstable

Registered: 08 Jul 2013

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Post #1

Hey, just a general question. For a turbo'd '6 what size oil cooler do you all think it will need? Lets say running around 400-450bhp. Mainly road and show use but the occassional satapod run and open track day.

I understand people are using 19 row coolers for their supercharged cars but the added heat from the turbo is making me think i need bigger. Maybe a 25row. The turbo in question is watercooled aswell.

what do you all think?

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208 GTI Owner
Turbo'd '6 project - work in progress

Posted 20th Feb 2014 at 12:26

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3rd time lucky

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Post #2

I would imagine a 19 row should be sufficient. Focus on the size of the intercooler Thumbs up

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Posted 20th Feb 2014 at 12:29

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allanallen

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Location: Buxton

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Post #3

Far too many factors to say for sure. A well positioned 10 row may well be sufficient for a road car.

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Posted 20th Feb 2014 at 13:11

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gman

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Location: Didcot

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Post #4

allanallen wrote:

Far too many factors to say for sure. A well positioned 10 row may well be sufficient for a road car.

tracked 6 maybe, but not a turbocharged engine

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1992 Onyx Black 205 GTI-6
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Posted 20th Feb 2014 at 13:30

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allanallen

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Post #5

Nah, you'd want bigger than a 10row on a tracked 6!
Turbo charged or not, it's a road car so it's only realistically gonna get short bursts of 'hammer'. A mates (standard engined) 270bhp turbo'd 6 road car has no oil cooler, it's been fine so far with fast road use.

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Posted 20th Feb 2014 at 13:36

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rallyeash

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Location: Devizes

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Post #6

I only have 13 row on my track car and never gets above 100 degree.

Location and pipework is key.

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Project thread here
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Posted 20th Feb 2014 at 13:48

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3rd time lucky

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Post #7

Too big an oil cooler, you wont get your oil up to normal running temp when driving normally. Type of oil is also key Thumbs up

________________________________________

DIABLO GTI-6 - Legend - NILE GTI-6 - Sold
CHERRY GTI-6 P1 SUPERCHARGED - Broken up
BLACK RALLYE - Sold
205 Dturbo xud9 work horse - Dead
CHERRY RALLYE - new toy

Posted 20th Feb 2014 at 14:12

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superchargedblack1997gti6

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Location: guildford

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Post #8

Personally I'd say go for at least a 19row cooler and cut the bumper or fit ducting to give good airflow through it.Also use a thermostatic plate then oil will get up to temp before it's allowed to reach the cooler? that's what I'm putting on my ShB supercharged car and the Turbo in you're car will heat the oil significantly more and raise under bonnet temps massively? Just my 50ps worth sounds like an awesome project any list of specs? pics?

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Posted 20th Feb 2014 at 18:10

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RetroPug

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Location: Leicestershire

Registered: 15 Jan 2013

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Post #9

To add to this, it's better to have a big, well-ducted oil cooler that might cool too much in winter or under some situations which can then be partially blanked if necessary.

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61k miles Ph.1 Diablo '6 Project Thread

Posted 20th Feb 2014 at 17:59

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pete-gti

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Location: Kent

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Post #10

I'm running 13 one, more then enough, as said above location is the key

Posted 20th Feb 2014 at 18:45

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armzsc6

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Location: Crowborough

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Post #11

Same as Pete, I have a 13row setup behind the front fog light getting direct airflow on a thermostatic takeoff plate. Sits at 80 degrees all day long when driving normally, never went past 100 when going up Prescott hill climb in 30degree heat last year.

Would say 19 row should be adequate if you have good airflow in and out of it.

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Posted 20th Feb 2014 at 18:54

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stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

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Post #12

I run a 19-row cooler, I found a 13-row wasn't sufficient enough.

Mine sits behind the o/s foglight hole, and the oil sits at 80 all the time, never over 100 on track after 45 minutes, so I'd say it works well.

Running too cold in the winter shouldn't be an issue if you have a thermostat in the sandwich plate as the oil won't be allowed to flow to the cooler until it reaches 80c anyway.

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Posted 20th Feb 2014 at 22:41

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craig903

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Location: whitstable

Registered: 08 Jul 2013

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Post #13

Yes the plans for a thermostatic sandwich plate. Thanks for all the replies. As far as the project/car goes I will put it in the project section in a month or two. Gt3071r with a custom made manifold. Plan is forged engine the same as a supercharged 6. Maybe gas flowed. With suspension and brake upgrades of course.

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208 GTI Owner
Turbo'd '6 project - work in progress

Posted 20th Feb 2014 at 23:36

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calibra306

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Location: Gravesend, Kent

Registered: 06 Nov 2011

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Post #14

Dont think anyone has mentioned pipe size!

Not sure on the 4 cylinders but on my v6 it was suggested the pipe work be 5/8 bzp as will give better flow then the smaller 1/2 bzp

Think anything then a standard gti ie supercharged etc should have the larger dia pipework

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Posted 21st Feb 2014 at 00:23

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craig903

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Location: whitstable

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Post #15

Makes sence with the pipe but i don't know what effect on the oil pressure it would have? I've only ever seen 1/2 bsp sandwich plates for a '6

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208 GTI Owner
Turbo'd '6 project - work in progress

Posted 21st Feb 2014 at 12:35

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pete-gti

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Post #16

All about location :-)

Posted 21st Feb 2014 at 23:18

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buzzbrightyear

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Post #17

stan_306gti6 wrote:

I run a 19-row cooler, I found a 13-row wasn't sufficient enough.

Mine sits behind the o/s foglight hole, and the oil sits in the garage at 5-20c depending on which season were in, never go on track or road, so I'd say it works well.

Running too cold in the winter shouldn't be an issue if you have a thermostat in the sandwich plate as the oil won't be allowed to flow to the cooler until it reaches 80c anyway.

________________________________________

andrew315rawson@live.co.uk
Moonstone phase 7 gti6
My Project thread: http://www.306gti6.com/forum/showthread.php?id=119992&page=1

Posted 23rd Feb 2014 at 15:13

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