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#1 | ||
Veteran
Join Date: Nov 2005
Posts: 1,406
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gear oil issues
I'm circuit racing a 200bhp mk7 fiesta turbo, the box is fitted with a quaife diff and professionally built, but it appears the boxes are getting uber hot and really burning up the oil, after 1 or 2 race meetings the oil stinks of sulphur.
We are using good grade 75W140 oils......but they still take a beating. Are there any better gear oils out there that can handle the high temperatures?........or it it time for a gear box oil cooler to be fitted? I'm not a layman so I dont need an explanation of why the oil stinks, I know why!.........am just after some improved oil recommendation's |
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KnighTorque ![]() |
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#2 | ||
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Join Date: Mar 2013
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Quote:
.https://www.opieoils.co.uk/p-832-sil...-gear-oil.aspx Bit expensive for road use , but worth it under very hard use |
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#3 | ||
Racer
Join Date: Aug 2006
Posts: 306
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Following with interest.
I am about to take delivery of my c200rwkw MX5 MSM after a full engine rebuild and turbo upgrade, and this subject has relevance to me, as the boxes are the next weak link. Are you datalogging the oil temps? It would help to know the temperature you expect the oil to work at, as you can then take that to the oil manufacturers who may have one that will work at that temp. It doesn't matter what 'good' oils you are using, if you are pushing them over their max operating temperature they won't be good for very long. I would have put a cooler on by now, I presume you have something that has stood in the way of that. |
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#4 | ||
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Quote:
due to rebranding a few years ago . |
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#5 | ||
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Have you spoken to Quaife about the problem?
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#6 | ||
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Quote:
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#7 | ||
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+ 1. I think a good rad/pump is mandatory. Racing a Miata too, we drain the gearbox and dif' every meeting, engine every two meetings (including the damn oil filter!). A meeting here is 2/4 times 25 minutes FP, 30 minutes qualy and 2 or 3 races of 35 minutes.
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Celui qui est parti de rien pour arriver nulle part,n'a de merci a dire a personne.Pour ceux qui vont chercher midi a quatorze heures, la minute de Vérité risque de se faire attendre longtemps. ![]() |
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#8 | |||
Racer
Join Date: Aug 2006
Posts: 306
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Quote:
Quaife may have an answer, but if the OP doesn't know what temps he is running that is of limited value. Gerald's MO will be my starting point, fortunately I have just declared my hoist operational, making such chores so much simpler, and therefore more likely to actually get done! |
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#9 | ||
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Quote:
Was advised by the works team that the only oil to run in the gearbox was the SRG75 . Did about 10 Internationals over 3 or 4 years with no box problems . Most of those rallies would be about 180 miles competitive and about the same mileage road use . The car would usually be on the go most of the day , with not a lot of time to cool down , so it did seem ok for standing up to the heat . A couple of the rallies were Spain and Portugal , so not cool weather either . |
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#10 | ||
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From expérience (mainly 911 classic) we tried to keep our gearbow oil below 125° and engine at circa 105°. As stated by GreenMachine abve you need to know what is the max temp you reach and for how long together with the average one too.
I think you can find help from real specialists like TotalEnergies or better Red Line directly or through the UK distributor. And if its obvious that viscosity if of importance, going too high doesn't help. In my Capri, I went to W250 for the rear axle with LSD, and the result was not good. In spite of running permanently above 150° C. You could find help here: https://www.scimed.co.uk/conostan-oi...SAAEgKXxPD_BwE Last edited by Gerard C; 5 Oct 2023 at 13:05. |
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__________________
Celui qui est parti de rien pour arriver nulle part,n'a de merci a dire a personne.Pour ceux qui vont chercher midi a quatorze heures, la minute de Vérité risque de se faire attendre longtemps. ![]() |
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#11 | ||
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Or here: https://www.oilsampling.co.uk/engine-oil-analysis After the wreckage of several gearboxes in endurance, we found a lab' in Belgium to analyse our oil. We then changed from M***l to C*****l for good reasons. Bearing in mind that sometimes oil formulation are subject to change due to environemental concern. Was the case for at least one reference for Va******ne engine oil. A new reference appeared in the catalogue, racing use or closed roads only.
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__________________
Celui qui est parti de rien pour arriver nulle part,n'a de merci a dire a personne.Pour ceux qui vont chercher midi a quatorze heures, la minute de Vérité risque de se faire attendre longtemps. ![]() |
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#12 | ||
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Join Date: May 2013
Posts: 10,770
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Should go back to the original question sometimes…
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__________________
Celui qui est parti de rien pour arriver nulle part,n'a de merci a dire a personne.Pour ceux qui vont chercher midi a quatorze heures, la minute de Vérité risque de se faire attendre longtemps. ![]() |
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#13 | ||
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Join Date: Nov 2005
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Hi folks - many thanks for the replies, there seems a common theme to try the Fuchs SRG75 or Syn5 75W90, so I will give that a bash.
The Box is a standard Mk7 Fiesta ST180 with a quaife diff and a 4.3 final drive ratio, all professionally built and blue-printed by a well respected gearbox builder, all the gears and synchros are standard ford. Last edited by knighty; 10 Oct 2023 at 06:46. |
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KnighTorque ![]() |
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#14 | ||
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For what it's worth I used ZX1 in the engine/ gearbox and LSDs in every race that I entered from the early 90s until 2013 and never had one mechanical failure due to lubrication problems. Before that I had quite a few issues that put me out of races.
At places like Spa where I was pulling 10k a lot of the time meant that it was always working hard, and with about 300 class and race wins it must mean something. Last edited by GORDON STREETER; 26 Oct 2023 at 17:50. |
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Balls of steel (knob of butter) They're Asking For Larkins. ( Proper beer) not you're Eurofizz crap. Hace más calor en España. Me han conocido a hablar un montón cojones! Send any cheques and cash to PO box 1 Lagos Nigeria Africa ! ![]() |
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