jims heat sink cam cover

[Hillside Motorcycle]

We steer clear of JIMS products, as that outfit has a NOTORIOUS reputation of playing shell games with folks, with product info, as well as warranty items, or blatant manufacturing errors.
We've had first-hand experience with that, so in order to keep things, MUCH less complicated, we have turned the page on that nonsense.
Scott

[prodrag1320]

I dont buy ANYTHING from JIMS.

:agree:way overpriced & non existant customer service

[Buglet]

     You have that right, no more JIMS here.

[Mix01FLHT]

gimmick...

Definitely. When you have a motor that is generating say 7500 watts ( about 10 HP) down the road.. Its probably loosing another 7500 in heat..  I see heat sinks bigger that that trying to dissipate 20 watts.. Now the air flow may be higher but doubt it pulls out more than 100 to 200 watts.. Out of 7500?   Please..

Max

[wolfglide]

First things first - show me 2 harleys that run at the same temperature. The study you recommend is a reproducibility  study and not valid due to difference  in
the temperature of 2 harleys. The repeatability study I performed has 1/2 the measurement uncertainty. Trust me, I am Accredited by ANSI/ANAB-ACLASS in Thermodynamics. The test I performed only validates the fact that static heat sinks work, dynamic heat sinks work better. The temperature was dropped in the cam cover only, I do not expect it to "cool the motor". When checking the scavenge on my 107 S&S and my 120 Jims, I always get more  oil from these larger engine blocks. This means more oil in the cam chest trapped in a little easy bake oven.  This problem goes away when I went to a fueling oil pump and plate but I got tired of looking for my dip stick on the side of the road so I went back to the new style harley oil pump and Jims plate.  Thermal resistance !! REALLY . Do you want me to include ambient temp, humidity and barometric pressure in the equation ?. I can also provide the air buoyancy relative the specific gravity of 7075 aluminum. Anything else ?
This unit will not cool your motor, but it may remove some heat from the cam chest were there is a bunch of thermal expansion of dissimilar materials.
It also may stop some of the thermal transfer from the front exhaust to the cam chest.
If you don't wanna buy this heat sink, put some 1/4" spacers under the plate screws and you will get some of the effect, looks like you did nothing, and you won't suffer ridicule for spending $75.00 for something that looks cool and despite your expert opinion. It works. After a hot ride I can touch the heat sink. After your next hot ride, touch your stock unit.  http:// cornerstonemetrology.com   

[Jeffd]

I don't think you hlep sell any LOL.  might try a different approach.

[Deye76]

"I can also provide the air buoyancy relative the specific gravity of 7075 aluminum. Anything else ?"

I like this guy. Left Max speechless. 

[dakota224]

After installing my see-thru nylon cam-cover, you not only get to visually check stuff (like looking into a front load washer) but I'm sure it lowered the oil temp by nearly .0003 degrees C...for less than the Jim's product, too!

Where can i get me one of those see thru cam covers    please do tell ..

[Admiral Akbar]

I like this guy. Left Max speechless. 

It's taken me this long to get off the floor.. I think I wet my undies..

Max

[Admiral Akbar]

Let's just say that it looks cool and leave it at that..

Max

[wolfglide]

Sorry for the attitude guys. Took it way to personal.  Took me about 10 hours to make the prototype unit on a 10" southbend lathe. Jims added some improvements I like a lot.  It never was ment to replace my oil cooler but I have noticed my oil temp gage is a few degrees lower. Thats what prompted the hot plate test. Any body else having problems reading the harley analog oil temp gage ? its got lines and dots and numbers in between. I think this gage is going in the trash and will be digital soon. If I go to Sturgis this year I will do a 100/100 test on it and see whats up. 
Sorry Max - I am a Metrologist and it is said that Metrologist are never wrong - we just make mistakes. Maybe you have seen the bumper sticker ?.
Anyway, Metrology is the science of measurement and I have performed calibration and built fixtures for Jims Machine, S&S Cycle, STD, Performance Machine, Dave Mackie Engineering and also consulted with Fueling and BC Gerolomy. You can see some of my handy work on my web site like the 2000 pound spring tester we built for S&S to test valve springs. My groin just shuttered - 2000 pound valve springs !!/|\ That could leave a mark

[Deye76]

Don't be sorry, your an educated guy, and I like your posts 

[MikeL]

You oughta try to figure a way to heat sink the primary.
I might give the heat sink a try may prolong the life of my cam sensor.


                                                                                      MIKE

[Admiral Akbar]

Do you calibrate Dynos? 



Max

[wolfglide]

Speed only - If its a Dyna, removal of the torque sensor is a pain in the ass. Have been thinking about building a fixture that can be preloaded on roller with a calibrated torque sensor to observe running torque to calculate HP but just have not had time. Was talking to Scott at Bay Area Cycles and Glendale HD about doing speed so he can verify California HP bikes that they use on the freeways for speed comparisons.

[wolfglide]

You oughta try to figure a way to heat sink the primary.
I might give the heat sink a try may prolong the life of my cam sensor.


                                                                                      MIKE

Thanks Mike - is it cause we ride the same machine ? 04 roadglide. Your smart TOO!!
Keith

[Admiral Akbar]

Speed only - If its a Dyna, removal of the torque sensor is a pain in the ass.

Thanks for the reply,,

It may be but I understand that just disconnecting it is pretty easy.. 

Max

[trex]

Don't be sorry, your an educated guy, and I like your posts