mfgguru
Makin' it better!
A while back I read a post by gmctd about how to adjust the kick-on temp of the stock fan clutch.
Quote:Remove the RTV glob from the slot - pull the angled section of the bi-metal strip outta the slot, gently straighten the angle, bending to conform to the rest of the coil, leaving a very small lip that will fit in the slot - re-RTV the stip (strip tip) in the slot, let cure, and voila!!!!!! - yer clutch now engages at lower temps............. By: GMCTD
I had to do a big(to me it's big) tow this weekend, hauling an 8x10 shed on a 30ft goose neck flat deck about 100 miles. Previously while towing my camper, the temps would come up just over 100 deg cel. and then go back down. Didn't want to spend the money on a new clutch just yet I though what is there to lose? I spun the fan assembly off and pulled out the RTV, gently straightened the tab out and made a new tab about 3/16 further down the BI METAL strip. I re RTVed it in place and put it back on. WHAT A DIFFERENCE! My truck, pulling the shed, the big wind sail it is(stupid thing pulled really hard), was WOT in 3rd to get 60 mph for 1.5 hours and the temp never went past 95 C. Boost was at 10-12 and fuel pressure at 2.5 PSI with an after market carter LP. I am thouroughly impressed. I would have Defueled for sure without that mod. I plan to make a little less agressive adjustment next time, for it came on a bit early, but the results are undeniably fantastic.
Will take pics when I make next adjustment.
PS, from what I have described, how much difference would a reflash make?
Quote:Remove the RTV glob from the slot - pull the angled section of the bi-metal strip outta the slot, gently straighten the angle, bending to conform to the rest of the coil, leaving a very small lip that will fit in the slot - re-RTV the stip (strip tip) in the slot, let cure, and voila!!!!!! - yer clutch now engages at lower temps............. By: GMCTD
I had to do a big(to me it's big) tow this weekend, hauling an 8x10 shed on a 30ft goose neck flat deck about 100 miles. Previously while towing my camper, the temps would come up just over 100 deg cel. and then go back down. Didn't want to spend the money on a new clutch just yet I though what is there to lose? I spun the fan assembly off and pulled out the RTV, gently straightened the tab out and made a new tab about 3/16 further down the BI METAL strip. I re RTVed it in place and put it back on. WHAT A DIFFERENCE! My truck, pulling the shed, the big wind sail it is(stupid thing pulled really hard), was WOT in 3rd to get 60 mph for 1.5 hours and the temp never went past 95 C. Boost was at 10-12 and fuel pressure at 2.5 PSI with an after market carter LP. I am thouroughly impressed. I would have Defueled for sure without that mod. I plan to make a little less agressive adjustment next time, for it came on a bit early, but the results are undeniably fantastic.
Will take pics when I make next adjustment.
PS, from what I have described, how much difference would a reflash make?
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