Rob Walker Posted April 24, 2007 Share Posted April 24, 2007 Hi, First track day with my new 2L duratec yesterday at Cadwell, the car ran very well but I have a problem with high oil temperatures the car is running with the Raceline wet sump and I was seeing 120C oil temp after 10 mins on track, Coolant temp never got above 90C despite drafting ECR for six laps, air temp was only 15C at cadwell so an oil cooler is required. Anyone fitted one to their duratec, what did you fit and where did you mount it etc. Rob Link to comment Share on other sites More sharing options...
BAZZA Posted April 24, 2007 Share Posted April 24, 2007 Hi Rob, I am building an R400 now and it has a Mocal air/oil exchanger mounted in front of the rad. This is a Caterham setup and the have brakets that bolt to the side plate on the rad which hold the cooler, they also have a cowl around the rad fan at the rear of the rad. Due to the newness of the car this whole setup is still evolving as I build my one and cooling seems to be quite an issue. Barry R400 Duratec No. 001 Link to comment Share on other sites More sharing options...
dannylt Posted April 24, 2007 Share Posted April 24, 2007 120 is about the limit you want to see I guess, but amazed you hit this so quickly. My dry sumped duratec with quite a large tank very rarely hits 100 unless it's very hot and I stay out for over 20 minutes. Coolant never budges from 85 or so. Link to comment Share on other sites More sharing options...
Rob Walker Posted April 24, 2007 Author Share Posted April 24, 2007 Danny, I have not seen any high oil temps with the dry sump fitted, this is a problem with the Wet sump. Cruising at about 4000 rpm on the motorway oil temp will rise steadly to well over 100C Link to comment Share on other sites More sharing options...
Allen Payne Posted April 24, 2007 Share Posted April 24, 2007 Maybe a silly question, but you haven't just got too much oil in the sump and the crank is whipping it up? Link to comment Share on other sites More sharing options...
dannylt Posted April 24, 2007 Share Posted April 24, 2007 Another reason on top of ground clearance to stop considering switching to wet sump then. Link to comment Share on other sites More sharing options...
Rob Walker Posted April 24, 2007 Author Share Posted April 24, 2007 Bazza, Do you know the size of the oil cooler that CC have suppied with your kit ie How many rows 13 possibly ? Link to comment Share on other sites More sharing options...
BAZZA Posted April 24, 2007 Share Posted April 24, 2007 Rob, it's about 13 but I will check tonight and let you know. Barry R400 Duratec No. 001 Link to comment Share on other sites More sharing options...
RiF Posted April 24, 2007 Share Posted April 24, 2007 I have Raceline wet sump and don't see over 100 on track on a very hot day. Perhaps I don't try hard enough though 😬 RiF Flying even faster in my very bright yellow 226bhp Duratec 7, with internal kevlar/carbon panels and pushrod suspension 😬 😬 😬.for pictures of 7 and carbon Link to comment Share on other sites More sharing options...
BAZZA Posted April 24, 2007 Share Posted April 24, 2007 Richard, Caterham use the Raceline sump as well! Barry R400 Duratec No. 001 Link to comment Share on other sites More sharing options...
moosetestbestanden Posted April 24, 2007 Share Posted April 24, 2007 I wonder what temp. Dobuy sees in Dubai at 50 C? Neil? Gee, an oil temp. gauge. What a novel idea. I'll have to see about one of those... ------- Chris Exempli Blatia Link to comment Share on other sites More sharing options...
simonbell Posted April 24, 2007 Share Posted April 24, 2007 My oil temp sender is bust so it hasn't been working for a while but the only time I've seen it over 100 was on a prolonged highway section of road in USA in very high temps on tour. I am interested though because I do notice after the car has been driving for a while the oil pressure does begin to dropoff. Up to now I've been using a Caterham water temp sender to measure oil temp in the sump, don't know how accurate they are for oil so maybe not the most accurate reading. Simon Bell - Caterham 7 Duratec R I`ve seen the future.....and it`s powered by duratec Check out the website here Link to comment Share on other sites More sharing options...
Dobuy Posted April 24, 2007 Share Posted April 24, 2007 I wonder what temp. Dobuy sees in Dubai at 50 C? Neil? OK, well I started off on a Raceline 226bhp with Raceline baffled wet-sump and Raceline Alloy (modified CC) radiator. Initially I got temperatures up to about 114' or so, on the track during high ambient temps (40-45'c) I fitted the Think Automotive Mocal oil-cooler with thermostatic spin on adapter fitted to just below the level of the radiator. This cooled temps down nicely, with the highest seen about 102 and the averages much closer to 85. P.S. If anyone is interested the whole oil cooler system is for sale as I now have a Dry Sump (and higher oil temps!) Duratec SV, built in Dubai Link to comment Share on other sites More sharing options...
6speedmanual Posted April 24, 2007 Share Posted April 24, 2007 Rob, How are you measuring oil temp? 120oC seems out of kilter with the other posts' experiences. Before spending £s and adding Kgs, have you really got a problem? Also, consider that fully synth oil should be OK even higher than 120oC so long as no other engine running probs and coolant temp is stable. 6SpeedManual *tongue*There's no such thing as too much BHP per Ton 😬 Link to comment Share on other sites More sharing options...
ECR Posted April 24, 2007 Share Posted April 24, 2007 I do hope that the extra weight of an oil cooler will slow you down a little ! Ex Chairman Roger Link to comment Share on other sites More sharing options...
BAZZA Posted April 25, 2007 Share Posted April 25, 2007 Morning Rob, as requested I checked my oil cooler last night and it is a nine row one? Barry R400 Duratec No. 001 Link to comment Share on other sites More sharing options...
Iain A Posted April 25, 2007 Share Posted April 25, 2007 HI I had the same problem with high oil temps when doing trackdays - 120C. Mine is a Raceline 220 BHP on a wet sump. I fitted an oil filter thermostatic sandwich plate and plumbed that to an 18 row oil cooler in front of the alloy radiator. This has solved the problem.. about 20 track days including the 2005 Le Sept where it got damned hot. Oil temp probe is in the sump, tapped into one of the blanking plugs. Oil temp now peaks at around 100C. Water temp usually around 90C on track. One of the Duratectives Link to comment Share on other sites More sharing options...
Rob Walker Posted April 25, 2007 Author Share Posted April 25, 2007 Bazza, Thanks thats a funny size I know Mocal make 7 10 13 16 etc going up in threes , recon you may have a 10 row unless its a special. 6speedmanual, I am measuring the bulk oil temp from the oil gallery in the sump imediately before the oil pump. What you have to consider is that yes it is OK to run at say 110C bulk oil temps with good synthetic oils but as we can only measure bulk oil temps this cannot tell what the peak oil temps are at a highly loaded part of the engine such as the big ends the oil temp at that point could be well above the measured bulk oil temp and be breaking down just in the most loaded place within the engine. Roger, I certainly hope it doesn`t slow me down or I will never catch you especially when you change back to slicks. Dobuy, I am interested in your oil cooler system YHM. Rob Edited by - Rob Walker on 25 Apr 2007 08:44:46 Link to comment Share on other sites More sharing options...
BAZZA Posted April 25, 2007 Share Posted April 25, 2007 Yes Rob I know it's a funny size so probably 10 but it was late! I should get good temp data from my one when it's running as it has stack. Maybe an oil stat is worth considering as well. Barry R400 Duratec No. 001 Link to comment Share on other sites More sharing options...
Rob Walker Posted April 25, 2007 Author Share Posted April 25, 2007 Bazza, Your oil stat will be integral in the sandwich take off plate that will be mounted between your spin on oilfilter and the block, I doubt that CC will supply without a stat in the system on a road car. Rob Link to comment Share on other sites More sharing options...
6speedmanual Posted April 25, 2007 Share Posted April 25, 2007 Rob I was refering to bulk oil temps. What I meant by "how are you measuring temp" was what type of sensor/gauge are you using? (rather than where you are measuring it) This is quite important because, for example, the little 2" diameter dashboard guages are notoriously inaccurate. (not necessarily inconsistent with themselves, but two gauges may give significantly different readings) For engineering analysis to make decisions about the oil cooler set-up, something accurate and consistent like a thermocouple and electronic meter should be used. 6SpeedManual *tongue*There's no such thing as too much BHP per Ton 😬 Link to comment Share on other sites More sharing options...
Rob Walker Posted April 25, 2007 Author Share Posted April 25, 2007 6speedmanual, Dash gauge is in agreement with the temps shown on the live page on the Emerald ECU which uses a different Bosch sensor, I have also used an external IR temperature measuring gun. Oh there is no doubt that its getting hot. Rob Link to comment Share on other sites More sharing options...
Dobuy Posted April 25, 2007 Share Posted April 25, 2007 Hi Rob, no YHM Duratec SV, built in Dubai Link to comment Share on other sites More sharing options...
simonbell Posted May 20, 2007 Share Posted May 20, 2007 I changed the oil and fitted new temp and pressure sensors yesterday. We have been out for a blat this afternoon and oil never got above 75 deg C, water temp always around 80 deg C...even after giving it the beans The new oil pressure sender now gives an idle pressure when warmed up of about 2 bar so the old sender was faulty. Simon Bell - Caterham 7 Duratec R I`ve seen the future.....and it`s powered by duratec Check out the website here Link to comment Share on other sites More sharing options...
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