A quick question abought a Dyna 2000 and oil cooler plumbing

[posplayr]

Well thought out? Well maybe, if the intended use is doing a Cannonball run though Death Valley.

That cooler system is actual two seperate cooler circuits: a general purpose cooler working off the oil feed ports just below the oil filter housing - feeding the cooler on the RH side, and the LH cooler feeding the top end oiler working off the oil distribution cavity under the carburetors. Massive over kill at work here, and potentially harmful since a) the oil is not likely to ever come up to proper temperature to boil off condensation (short of race conditions), and b) since there well be pumping losses, and possible leaks, with that much plumbing. The pumping losses can be offset somewhat by using different gears on the oil pump but still, I can't figure out the basic question of why the need for all that cooling capacity?

Ed,
I'm assuming this is a "street" 1428 cc motor. Unless he was planning to run a Turbo, the lowest piston kit APE lists is 11.7:1 CR so I bet that bayb gets hot idling in traffic.

I would suggesting buying a rear aftermarket top end oiler and plumbing the two coolers so that each supplies each side of the head. Als owould check that there is not some funny business going on with the plate under the carbarators. He should be splitting the supply for the coolers they not capturing it all.

http://www.thegsresources.com/_forum/showthread.php?t=150970

Jim

[Nessism]

Thanks for all the help here guys. I kinda thought that the way they had these coolers set up was a little odd. Would a motor like this stay cool on the street with say one of those coolers. The body work for on the front is kinda trashed and i think it would be easier to replace it than try to fix it and if i changed to a single cooler in the front i wouldn't have to modify it as much.

Even one of those coolers is way too much. I'd ditch them both and get something the size of a stock GS1150 cooler. Suzuki knew what they were doing.

[lucabond]

Is this plate something that stayed on the bike if it had points or was this a timing plate you just bolt on and set the timing and take it off like the plate for the GSXR Dyna ignition??

Yes it would stay on the bike if you had points I believe but never having owned a GS with points i can't say for sure. But you just need it to set your timing then your done with it. Good luck

[Mysuzyq]

Even one of those coolers is way too much. I'd ditch them both and get something the size of a stock GS1150 cooler. Suzuki knew what they were doing.

I would have to disagree Ed, having put some miles on a 1261 kitted GS1100 running an 1150 cooler. On a stock bike you would be correct, but even the 1261 runs noticeably hotter than stock, and that is with relatively cooler ambient temps up here....the 1150 size cooler was barely adequate whilst riding in summer....in any kind of heavy traffic situation, 140C (280F) could be expected. I would think a 1428 street monster would generate significantly more heat than the 1261......to me his best option would be to retain both coolers for now, work toward rectifying the top end routing as per Dar's input, and then run a few days, monitoring temps.....it should be pretty simple to replace the cooler that's connected to the normal 1100 outlets with a smaller item, if need be, but IMHO he will probably end up using the capacity he has.

Tony.

[Nessism]

I would have to disagree Ed, having put some miles on a 1261 kitted GS1100 running an 1150 cooler. On a stock bike you would be correct, but even the 1261 runs noticeably hotter than stock, and that is with relatively cooler ambient temps up here....the 1150 size cooler was barely adequate whilst riding in summer....in any kind of heavy traffic situation, 140C (280F) could be expected. I would think a 1428 street monster would generate significantly more heat than the 1261......to me his best option would be to retain both coolers for now, work toward rectifying the top end routing as per Dar's input, and then run a few days, monitoring temps.....it should be pretty simple to replace the cooler that's connected to the normal 1100 outlets with a smaller item, if need be, but IMHO he will probably end up using the capacity he has.

Tony.

I concede that an 1150 sized cooler may be inadequate in heavy traffic with a large bore engine, but no F'ing way do you need two huge coolers like the ones shown. One reasonable sized Earl's cooler would have enough capacity and it would be only about 1/3 the size of one of those coolers. The photo below shows the smallest of the curved Earl's coolers. They make all kinds of types and sizes so you can customize, but there is no value in over cooling the oil so pick the cooler carefully.