CV Joint Temperatures Elan NP01 Prototype

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12.12.17, 11:08 AM
Diamond Level Motorsports

CV Joint Temperatures Elan NP01 Prototype

Hi,

Does anyone have any idea what the preferred temperature, as measured on the outside of the CV with an on board IR sensor, should be?

After talking to some drive line company's at the PRI show last week one person said no more then +200F. Unfortunately the CV's in our car are running around +250F with the stock MZR 2.0L (170HP at the wheels) Air ducting is under consideration to lower the temp, however, I am worried about potentially over cooling them.

We are getting ready to install an new motor with about 50% more power and I am concerned that the original CV's are going to get too hot and fail. The axle has about a 7 deg angle entering the CV witch is probably not helping the heat problem. We currently run the NEO grease and have not had any failures as of yet.

Does anyone know a CV expert that can help me?
12.13.17, 2:17 PM
lmpdesigner

Dupont Krytox grease

May help you out. This is what most Indycar teams, LMP1 teams and F1 team use in their CV's. (Tripo's)
12.13.17, 2:17 PM
lmpdesigner

Over cooling?

Not possible.
12.15.17, 5:23 PM
DanW

Quote:

Originally Posted by Diamond Level Motorsports

Hi,

Does anyone have any idea what the preferred temperature, as measured on the outside of the CV with an on board IR sensor, should be?

After talking to some drive line company's at the PRI show last week one person said no more then +200F. Unfortunately the CV's in our car are running around +250F with the stock MZR 2.0L (170HP at the wheels) Air ducting is under consideration to lower the temp, however, I am worried about potentially over cooling them.

We are getting ready to install an new motor with about 50% more power and I am concerned that the original CV's are going to get too hot and fail. The axle has about a 7 deg angle entering the CV witch is probably not helping the heat problem. We currently run the NEO grease and have not had any failures as of yet.

Does anyone know a CV expert that can help me?

Try the source.

I would try to determine the max torque produced by the new motor and contact GKN for advice.

http://www.gknservice.com/fileadmin/..._Catalogue.pdf

GKN manufactures Lobro CV joints. The grease they recommend has a high dropping point, 260degC. The dropping point is when the grease thicknener turns to liquid.

http://race.parts/Catalogue/Drivetrain/CV-Joints/CV-Grease/GKN-CV-Joint-Grease