.... oil coolers - Wrist Twisters
 
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post #1 of 26 Old 08-23-2011, 11:38 PM Thread Starter
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.... oil coolers

..... Is there anyone in the group, that has installed a bigger, better oil cooler on their bike??
I am in the process, of doing so. not sure on the brand. Setrab, Earls.

.. question, if your bike came with a 5 row cooler [3' tall] and you replaced it with a 10,13 or 16 row cooler. [5' tall]. Would that stop air flow getting to the top of the motor??

thanks, brook

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post #2 of 26 Old 08-24-2011, 01:41 AM
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What's the bike? And why do you think the factory got it wrong?

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post #3 of 26 Old 08-24-2011, 06:01 PM Thread Starter
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..... It's a Yamaha FJ1200 But, with a big bore kit, that's why I am concerned.
Plus, I have heard from many,...... that having a large oil cooler saves motors, especially setting in traffic, on a hot [FL.] summer day.

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post #4 of 26 Old 08-24-2011, 08:40 PM
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You're thinking correct on the FJ1200. I'm sure you're talking inches instead of feet. Two more inches would help more then hurt.
FJs were the original powerhouse Sport Tourers.

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post #5 of 26 Old 08-24-2011, 09:08 PM
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i dont see how it can hurt... and if your makin a lil extra power why not

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post #6 of 26 Old 08-24-2011, 09:36 PM
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Quote:
Originally Posted by nd4spdbh View Post
i dont see how it can hurt... and if your makin a lil extra power why not
Cool oil kills power.
It's been documented for decades.
Air cooled or water cooled 4 strokes, be it car V8s or inline 4s, none of them make peak power without oil temps in excess of 200 F.

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post #7 of 26 Old 08-24-2011, 09:41 PM
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Quote:
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You're thinking correct on the FJ1200. I'm sure you're talking inches instead of feet. Two more inches would help more then hurt.
FJs were the original powerhouse Sport Tourers.
Air cooled engine, right ?
They cook in slow traffic.
A built engine will make even more heat.
Increased oil cooler size can really help.
Is there a thermostat so the cooler is bypassed until the oil is warm enough ?

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post #8 of 26 Old 08-24-2011, 09:46 PM
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Quote:
Originally Posted by mcromo44 View Post
Cool oil kills power.
It's been documented for decades.
Air cooled or water cooled 4 strokes, be it car V8s or inline 4s, none of them make peak power without oil temps in excess of 200 F.
well yes... but taking into consideration the situation (bored 1200) in a hotter climate... a SLIGHTLY bigger rad wouldnt be able to cool it THAT much more.

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post #9 of 26 Old 08-24-2011, 10:02 PM Thread Starter
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..... after the rebuild, I took the bike out. it seem to be fine,..... then after about 20-30 minutes, setting at a red light, it got extremely hot,..... I mean hot.

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post #10 of 26 Old 08-24-2011, 10:06 PM Thread Starter
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..... went from a 1189cc bore to a 1349cc with sleeves

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post #11 of 26 Old 08-24-2011, 10:41 PM
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Quote:
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..... went from a 1189cc bore to a 1349cc with sleeves
and probably bumped to some higher comp pistons and or decked head while you were at it.... further making it run hotter.

ya stick a larger oil cooler on it. maybe also consider a 12v fan behind it that you can flick on when things get real hot... you can get 12v computer fans that pump 100cfm for pretty cheap.

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post #12 of 26 Old 08-24-2011, 11:09 PM
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Quote:
Originally Posted by nd4spdbh View Post
and probably bumped to some higher comp pistons and or decked head while you were at it.... further making it run hotter.

ya stick a larger oil cooler on it. maybe also consider a 12v fan behind it that you can flick on when things get real hot... you can get 12v computer fans that pump 100cfm for pretty cheap.
I doubt a 100 cfm computer fan will work.... i mean look how massive the fan is on a 919 compared to a computer fan, it leads me to believe that much more output is needed somewhere in the 500cfm range at least? but that's just guessing

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post #13 of 26 Old 08-25-2011, 12:23 AM
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Sitting at a light for 20-30 minutes...with an air cooled bike running? Give me the keys, walk away. Please.

if you love your motorcycle, set it free.. if it comes back and hits you.. you highsided
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post #14 of 26 Old 08-25-2011, 12:24 AM
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Quote:
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I doubt a 100 cfm computer fan will work.... i mean look how massive the fan is on a 919 compared to a computer fan, it leads me to believe that much more output is needed somewhere in the 500cfm range at least? but that's just guessing
doubt it... the fan on the 919 MAYBE moves 150-200 cfm... and thats for the water cooling radiator... we are only talking an oil cooler here. 100cfm stop and go in traffic will be a HELL of alot more than what it would be getting without it.

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post #15 of 26 Old 08-25-2011, 01:19 AM Thread Starter
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.... A fan off of a FZ!
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post #16 of 26 Old 08-25-2011, 08:59 PM
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haha that works... is the oil cooler area ducted... cus i dont see how that fan is gonna pull much air through that oil cooler.

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post #17 of 26 Old 08-25-2011, 09:23 PM Thread Starter
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..... The fan has been there for about year now. when I install it, the goal was to direct the air to the top of the motor. like the stock FJ. But, I replaced the stock nose with a R1 nose.
the fan works good in traffic.
.. I am still going to replace the cooler with a 10row..... The fan came off a FZ1 it creates alot of windflow.
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post #18 of 26 Old 08-26-2011, 01:55 AM
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I bet that engine will haul arse with the bore kit.

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post #19 of 26 Old 08-26-2011, 09:08 PM Thread Starter
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...... I hope so,...... it's not broken-in yet.
Waiting on the oil cooler !

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post #20 of 26 Old 08-27-2011, 09:53 AM
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Quote:
Originally Posted by brook View Post
..... after the rebuild, I took the bike out. it seem to be fine,..... then after about 20-30 minutes, setting at a red light, it got extremely hot,..... I mean hot.
My stock FJ would cook you at stops, I can't imagine the heat with a hopped up engine.

I think your on the right track. Most aftermarket oil coolers have a built in t-stat. If not, Lockhart use to make an inline t-stat.

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post #21 of 26 Old 08-27-2011, 01:49 PM Thread Starter
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......What year FJ?

I ordered a Earls 10row an-6male, 3.5 high, 1.25 thick, 14.1 length, I am not sure about the t-stat ?

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post #22 of 26 Old 08-27-2011, 03:59 PM
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Quote:
Originally Posted by brook View Post
......What year FJ?

I ordered a Earls 10row an-6male, 3.5 high, 1.25 thick, 14.1 length, I am not sure about the t-stat ?
Mine was a 89. I don't know on the Earls, someone from Earls should know.

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post #23 of 26 Old 08-28-2011, 07:53 AM
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can always cover part of the oil cooler in cold weather

dont need a bike to ride the fast lane
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post #24 of 26 Old 08-28-2011, 08:40 AM
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If the Earls doesn't work out, try an oil cooler from a older GSXR air/oil cooled bike. Those oil coolers were huge.

As a rule of thumb, if the cooler is made for a motorcycle than it has a t-stat/made for a car usually not.

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post #25 of 26 Old 08-29-2011, 02:39 PM Thread Starter
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..... Being in Tampa FL., don't have to worry to much about the cold.

I thought about the bigger older oil cooler, [Don't hold it against me. but, I am a Yamaha guy]. lol

bought Earl's 10row, because, it is a 3.5inch high cooler. And I believe, it is very important to have as much airflow as possible to the front of the motor.
the stock 5row is 3inch's high!

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post #26 of 26 Old 08-29-2011, 03:20 PM
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The old Lockarts had 180 F stats if memory serves me correctly. (I have one buried somewhere in the garage)
And anything with a lower temp setting is too low.

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