Fjr 1300 2003 heat on the left side - Page 4 - Yamaha FJR Forum : Yamaha FJR Owners Forums
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post #31 of 38 (permalink) Old 08-04-2020, 11:19 AM
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I did all the heat fixes on my '04 and then some.

In the below pic, you can see the left side "air cut off block" adjacent to the frame, just above the frame to engine mount.

In the end, being in SW Fla, I could only ride the bike 1/2 the year as it was just too hot..
Now, on vacation, (up in Tenn/Dragon, etc), the heat was bearable, even in summer..


Scott

2007 Yamaha FZ6- BD43 headlight mod, PIAA bulbs, Stebal air horn, Scorpion SS pipes-(no DB killers), Speedohealer, HEL SS brake lines, Fenda Extenda, K&P SS re-usable oil filter, custom mounted BMW style electrical outlet(L.S.), Techmount GPS mount with handlebar bar risers/set backs, additional helmet lock, custom mod'ed seat(Spencers), Hyper light-rear running/brake light, custom radiator/fan protector, Techspec tank pads, Yamaha rear rack with custom aluminum flat rack.
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post #32 of 38 (permalink) Old 08-06-2020, 07:38 PM
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Ah man this sucks! I bought mine 05 a while back and I absolutely love it. But now that its summer in texas! Im worried the fucking gas tank is going to explode! The rear corners of the tank gets too hot to touch with bare hands! Runs 2-3 bars coolant temp but an hour long ride has my groin chapped and doing weird leg butterfly movements. I def dont want to go cutting on it, i was hoping a header wrap may help. So i Start doing research and it looks like something im just going to have to deal with. Damnit!!!
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post #33 of 38 (permalink) Old 08-11-2020, 07:57 AM
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Guys, one if the things I have thought about on all of this is has anyone ceramic coated the header pipes inside & out as well as adding the thermal shield under the tank ?

Ive done the ceramic coating on headers in several cars now and it typically lowers the heat off the headers by about 75%, on my personal car the header temp went from about 1300f to about 300f as measured at 1-1 1/2 off the head. Just wondering if anyone had tried this.

A side benefit is it normally makes a bit of a performance improvement in the exhaust as it keeps the heat in the exhaust and helps it scavenge better.

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post #34 of 38 (permalink) Old 08-11-2020, 09:26 AM
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Yamaha fixed the heat problem on Gen2/3 bikes. They did not ceramic coat the header pipes to achieve this.

FJR Models owned from new, 2001, 2003, 2006, 2009, 2011, 2014.
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post #35 of 38 (permalink) Old 08-11-2020, 11:48 AM
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Fjr 1300 2003 heat on the left side

Quote:
Originally Posted by Bernie View Post
Yamaha fixed the heat problem on Gen2/3 bikes. They did not ceramic coat the header pipes to achieve this.
If somebody has a Gen1, they should be open to anything that works to fix the heat issue, no limits except maybe the wallet.

There will be lots of tricks that a manufacturer just won't do, if it costs them too much money. Wanna buy a stock horn?
.

Cheers,
Red
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- Pirelli Angel GT (Spec A) tires, RDL seat, TPMS, GPS digital speedometer (Amazon ~US$28.00).
P.S. Life is too short, and health is too valuable, to ride on cheap parade-duty tires.
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post #36 of 38 (permalink) Old 08-11-2020, 12:30 PM
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Quote:
Originally Posted by passx View Post

Ive done the ceramic coating on headers in several cars now and it typically lowers the heat off the headers by about 75%, on my personal car the header temp went from about 1300f to about 300f as measured at 1-1 1/2 off the head.
WOW! 1000F reduction?!? This was measured with an IR gun I assume? At idle or...?

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post #37 of 38 (permalink) Old 08-11-2020, 02:11 PM
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https://www.ebay.com/itm/NEW-YAMAHA-...wAAOSw2s1UtJiM
for under the tank
https://www.fjrowners.com/forum/mess...tml?1063970531
Then I cut dense foam used in shipping cases preformed for an item IE camera. for each side & wedged them between the frame & fairing just in front of knees & shins. This forced the air out the vents in the fairing & made the ride much more tolerable on my 05.
Another option I was going to perform before selling the bike http://www.fjr1300.info/mods/vent-mod.html

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Last edited by Madmudder; 08-11-2020 at 02:19 PM.
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post #38 of 38 (permalink) Old 08-11-2020, 05:44 PM
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Quote:
Originally Posted by slowdave View Post
WOW! 1000F reduction?!? This was measured with an IR gun I assume? At idle or...?

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Dave,yes this was measured with an IR gun , at about 1 out from the head. For some reason there is almost no measurable heat closer to the head.

Bernie, yes I realize the later Gens didnt have the heat issue but I was just thinking about the earlier models because theres been a number of guys buying the early ones on the cheap and ceramic coating the headers should help a lit with the heat but Ive never seen anyone do it. On my cars &1 or2 bikes Ive done the uncoated stuff will just sizzle your skin while the ceramic coated stuff you can touch, not for long but you can w/o getting burned. Also ceramic coating will prevent the pipes from rusting.

Just a thought. Hope it may help someone !
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