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BEC oil temp's
locoR1 - 15/4/07 at 08:31 PM

I would be grateful for your opinions on oil temp please, what max temps are you guys running?

After a week or so of settling thing down and sorting problems out yesterday evening I giving it its first real good thrashing I saw a max of 120c oil temp , is this to high ?

Shame I didn't have an oil temp gauge before fitting the turbo would of been useful to compare before and after temps.

As part of my winter conversion I fitted a sandwich plate and 13row oil cooler doing away with the oil to water type cooler, due to issues with space I couldn't get it in front of the radiator so its in the engine bay with ducting to it! may have to look at a bigger oil cooler?

Cheers Dave....................


McLannahan - 15/4/07 at 08:35 PM

I regularly run at 85 deg. Sitting in traffic with the fan running I've seen 112 deg but that's my record!

85 is my day to day temp - sitting at a steady speed not going too fast (60 in 6th gear) will see temp drop to 76.

I'm a GSXR1000 if that helps! Sadly not turbo'd!


jambojeef - 15/4/07 at 08:41 PM

Where is that measured?

If its in the sump then its on the warm side of cold but you could expect to see those kind of temperatures in a racy modern sportsbike when ridden hard so I dont think its excessive but you might need to run a good oil suited to higher temps and be prepared to change it a bit more regularly.

I agree with you about air flow though - oil coolers and radiators lose hardly any heat through radiation, ironically, so lots of airflow is through them is critical.

Ive had similar problem with mine what with space limitations and how to get good airflow both to and away from it.

Ive resorted to stashing it in the side panel - how about that? do you have room?

Geoff

[Edited on 15/4/07 by jambojeef]


MkIndy7 - 15/4/07 at 08:42 PM

Can't comment on a Bike engine but My XE lump in a tight tin top engine bay gets bloody hot!

I couldn't get my oil cooler infront of the Rad either so I had to put it behind the front splitter.

Its since dawned on me that air will only pass it then when the car is moving! not when your stuck in traffic etc.
When the cooler is infront of the rad the rad fan pulls cool air through it.

I've not recieved then yet but i've ordered some very powerful computer fans to mount behind the cooler and wire up to the rad fan to try and replicate this.


locoR1 - 15/4/07 at 09:07 PM

The temp sensor's fitted in the outlet from the sandwich plate before the oil cooler the only place I could find without removing the sump again.

Ive mounted the oil cooler between the bottom chassis rails in front of the engine with ducting from the bottom of the nose not ideal but the only real place left to fit it.

If I really tried could probably fit it in the nose between the chargcooler radiator and the cooling radiator but would have to be high up in the nose and have very long pipe runs and if I'm not carful could have problems with cooling with that lot in the nose cone.


dilley - 15/4/07 at 10:35 PM

definatley too hot


Hellfire - 16/4/07 at 10:06 AM

Too hot... oil begins to break down at very near that temperature. On trackdays we return to Pits at about 105C to allow a cool down!

More cool air in and/or more hot air out... or fit an oil cooler which is basically what we are going to have to do for trackdays in the summer...

Steve


ChrisGamlin - 16/4/07 at 12:14 PM

Sounds a bit on the hot side to me too.

Can you take a pic of your oil cooler position because if its where I think it is, its not going to get a lot of airflow. The best place for it if you can't mount it in its own flow of air is to have it sandwiched hard up against the water radiator, the closer the better.


locoR1 - 16/4/07 at 06:52 PM

Thanks for the reply's guys I thought it was a bit hot!

Chris I've put some pic's in my archive under oil cooler if you want to have a look some of the oil cooler as it is now with the ducting to it and some of the radiator and charge cooler radiator.

After looking at it again tonight It looks possible to mount it between the two radiators see picture.

Image deleted by owner
At least it should get a better air flow, if its still not enough I will have to look at a bigger cooler!

Dave..........


MkIndy7 - 16/4/07 at 06:58 PM

The High power fans I'd ordered were deliverd today.
It'll be a while before I'll get round to fitting the oil cooler back on with the fans to test them properly but there better than expected.

They'll flow 84Cfm of air a min! which I think is pretty good for a 83mm fan and I intend on having a pair sucking through the oil cooler.

So if its going to be dificult to get the cooler and associated pipework under the nose infront of the main rad fan i'd say there a plausable alternative.


locoR1 - 16/4/07 at 07:08 PM

Fans would probably help after a hard run then sitting in traffic.
Cant see them doing a lot at higher speeds though witch is when my oil temp is creeping up.


MkIndy7 - 16/4/07 at 07:29 PM

True, I noticed mine was creeping up when stuck in traffic hence why i've gone for the fans. The XE must run hot because it has an Ali sump with cooling fins cut into it. You would still probably gain some advantage by increasing the cooling of the oil whilst it is stood.

Maybe increase the capacity of oil in the system somehow (I noticed mine was near the minimum when it got v.hot).. provided it doesn't have an adverse an effect on the pressure.

Does the oil cooler have a thermostatic plate or is it open all the time?
Is this operating correctly and is it the correct one for that engine if it has one?


dilley - 16/4/07 at 08:13 PM

how is the intake and water temp looking???


ChrisGamlin - 16/4/07 at 08:23 PM

Image deleted by owner

The oil cooler won't be working very well at all there I'm afraid, even with the ducting its not going to get much more than a gentle breeze compared to being directly in the airflow because air doesn't like flowing fast down narrow long ducting tubes like that.

Also Im not sure how well your water radiator is going to work behind the intercooler. The gap behind the intercooler will cause the turbulent air to stall and not flow properly through the water rad. Much better would be to have them both slanted sandwiched tight against each other, that way the air flows through both as if its one thick radiator, so doesn't stall in between.

cheers

Chris


locoR1 - 16/4/07 at 08:29 PM

quote:
Originally posted by dilley
how is the intake and water temp looking???


haven't looked at intake temps lately but didn't see much over 40deg last time I cheked.

Haven't seen any increase in water temps from last year so looks like the good old escort rad still doing its job


locoR1 - 16/4/07 at 08:34 PM

The only reason I put the charge cooler rad upright was to try to keep it away from the heat of the normal rad was concerned about heat soak heating the water for the charge cooler.
Haven't had any problems with water temps.


ChrisGamlin - 16/4/07 at 08:44 PM

quote:
Originally posted by MkIndy7
They'll flow 84Cfm of air a min! which I think is pretty good for a 83mm fan and I intend on having a pair sucking through the oil cooler.



They won't be much use I don't think

Doing some quick calculations with an area of 80 x 160mm (i.e 2 x 80mm fan size), it would seem that about 1000CFM would be going through the oil cooler at 80mph if it was out in fresh air, so 160CFM is about the same as driving at ~15mph.

Edit: sorry, just re-read your post and realised you're fitting them to help cool when stationary. If thats the case and the cooler is out in the airflow, the only thing you need to watch out for is that the fans don't restrict the airflow through the cooler at higher speeds too much.

[Edited on 16/4/07 by ChrisGamlin]


ChrisGamlin - 16/4/07 at 08:49 PM

quote:
Originally posted by locoR1
The only reason I put the charge cooler rad upright was to try to keep it away from the heat of the normal rad was concerned about heat soak heating the water for the charge cooler.
Haven't had any problems with water temps.


Maybe wrong but when you're moving I wouldnt think there shouldnt be any significant heat soak because the air is moving in the other direction, ie through the chargecooler then through the water rad?


locoR1 - 16/4/07 at 08:52 PM

Chris and Chris

ChrisGamlin just had a look through your archive your using the water to oil cooler and a conventional oil cooler!

Ive removed the oil to water cooler to fit my sandwich plate and just using the 13 row cooler that could be my problem?

Looks like im heading for a total rethink!


ChrisGamlin - 16/4/07 at 09:02 PM

I don't think it will be that, I did originally have the OEM oil/water also plumbed in but the inlet pipe cracked on it so now its bypassed and I just run the oil/air cooler and it hasnt made a significant difference. I just couldnt be bothered with buying a blanking plate etc for it so just left it in situ

I think you'll find if you get the cooler right in the airflow a lot of your problems will go away, as mentioned above, you get over 1000CFM of air through an average sized small oil cooler at decent speed, you're probably getting 1/10th of that in its current position.

[Edited on 16/4/07 by ChrisGamlin]


locoR1 - 16/4/07 at 09:25 PM

Got to the stage I don’t want to spend to much more on it for this year so looks like moving it up front into the air flow sounds like the best option for now!

Thanks for your help