head temp?

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Apr 6, 2010 | 07:28 PM

huey408

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Cruiser

Joined: Nov 2007

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head temp?

I was ridding the other day it was in the upper 70's and my head temp was reaching 270*
How hot is to hot?
What temp do I need to start worring at?
I have the Thunderhart digital speedo thats were im getting my head temp readin from.

2007 Nightrain
113 head-quarters
.600 cams
11-1 comp
V&H big radius
T-Max

Apr 6, 2010 | 08:01 PM

Tom84FXST

Seasoned HDF Member

Joined: Nov 2009

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From: Farmington ,MS

300 on the front head and 330 on the rear head is considered "average"...doesn't seem to be much information on what too hot is.

Apr 6, 2010 | 08:16 PM

huey408

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Any idea if the gauge is reading the front or rear head?

Apr 7, 2010 | 07:57 AM

tk353

Ultimate HDF Member

Joined: Oct 2007

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From: Leander Texas

mine runs 300-330

Apr 7, 2010 | 09:27 AM

XARAN

Stellar HDF Member

Joined: Nov 2004

Posts: 3,156

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From: So Cal

Just to see what the temps read I have bounced an infrared thermometer off my cylinders at the exhaust outlet after riding and when my oil dip stick (meat thermometer type) was reading 230 degrees the cylinder temps were closer to 375 degrees with the rear clyinder being about 10 degrees hotter.