Engine cooling?
Extreme HDF Member
Joined: Feb 2015
Posts: 10,907
Likes: 8,758
From: Galt's Gulch - MI
These bigger inch Twin Cam's run too hot for their own good and improving engine cooling isn't a single magic bullet, but rather a step by step methodical approach involving great tuning, free flowing exhausts, free flowing A/C's venting hot crankcase gasses back to atmosphere, oil coolers, permanent oil filters for increased oil flow rates and lower parasitic load, relocating the oil filter, a tank lift providing added air flow to the heads, coil relocations to improve air flow to the rear cylinder, Wards fans, and cam changes to remove the 'EPA' cams. Each brings cooling to the table and it's a layering application of some or most of these modifications that will lower engine temperatures.
I've done all of these except fans and a coil relocation; my engine temperatures are much lower now, compared to stock.
DK Custom has a two part report on engine cooling that you should read:
http://www.dkcustomproducts.com/why-...cl-tc-dn-1.htm
http://www.dkcustomproducts.com/why-...cl-tc-dn-2.htm
I've done all of these except fans and a coil relocation; my engine temperatures are much lower now, compared to stock.
DK Custom has a two part report on engine cooling that you should read:
http://www.dkcustomproducts.com/why-...cl-tc-dn-1.htm
http://www.dkcustomproducts.com/why-...cl-tc-dn-2.htm
Check out our crotch cooler to put a barrier between you and the heat ..
Tourer
Joined: Apr 2007
Posts: 438
Likes: 57
These bigger inch Twin Cam's run too hot for their own good and improving engine cooling isn't a single magic bullet, but rather a step by step methodical approach involving great tuning, free flowing exhausts, free flowing A/C's venting hot crankcase gasses back to atmosphere, oil coolers, permanent oil filters for increased oil flow rates and lower parasitic load, relocating the oil filter, a tank lift providing added air flow to the heads, coil relocations to improve air flow to the rear cylinder, Wards fans, and cam changes to remove the 'EPA' cams. Each brings cooling to the table and it's a layering application of some or most of these modifications that will lower engine temperatures.
I've done all of these except fans and a coil relocation; my engine temperatures are much lower now, compared to stock.
DK Custom has a two part report on engine cooling that you should read:
http://www.dkcustomproducts.com/why-...cl-tc-dn-1.htm
http://www.dkcustomproducts.com/why-...cl-tc-dn-2.htm
I've done all of these except fans and a coil relocation; my engine temperatures are much lower now, compared to stock.
DK Custom has a two part report on engine cooling that you should read:
http://www.dkcustomproducts.com/why-...cl-tc-dn-1.htm
http://www.dkcustomproducts.com/why-...cl-tc-dn-2.htm
Stellar HDF Member
Joined: Feb 2011
Posts: 2,026
Likes: 474
The sad thing about Harley is you have spend an extra 1,500.00 to get these things to run right.
Gut the catalytic convertor in the head pipe it. All the cat does is generate excessive heat!
I gutted the cat out of the stock pipe & added a Andrews 48 cam & a Power Vision tuner from Fuel Moto.
The bike runs a lot cooler now. The cam helps the engine breath better & the extra fuel makes a world of difference.
Gut the catalytic convertor in the head pipe it. All the cat does is generate excessive heat!
I gutted the cat out of the stock pipe & added a Andrews 48 cam & a Power Vision tuner from Fuel Moto.
The bike runs a lot cooler now. The cam helps the engine breath better & the extra fuel makes a world of difference.
Last edited by Chicago Ken; Jul 9, 2018 at 03:00 PM.
Seasoned HDF Member
Joined: Jan 2015
Posts: 15,990
Likes: 7,111
From: Sandy Eggo's North County
Trending Topics
Extreme HDF Member
Joined: Feb 2015
Posts: 10,907
Likes: 8,758
From: Galt's Gulch - MI
Oh, ya think? How you still have an account on this forum astounds me; you feckless cat killing piece of filth. On the forums I moderate you would have received the ban hammer long ago. The mods here are as useless as you are...
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Seasoned HDF Member
Joined: Jun 2014
Posts: 5,465
Likes: 6,328
From: pacific northwest
The sad thing about Harley is you have spend an extra 1,500.00 to get these things to run right.
Gut the catalytic convertor in the head pipe it. All the cat does is generate excessive heat!
I gutted the cat out of the stock pipe & added a Andrews 48 cam & a Power Vision tuner from Fuel Moto.
The bike runs a lot cooler now. The cam helps the engine breath better & the extra fuel makes a world of difference.
Gut the catalytic convertor in the head pipe it. All the cat does is generate excessive heat!
I gutted the cat out of the stock pipe & added a Andrews 48 cam & a Power Vision tuner from Fuel Moto.
The bike runs a lot cooler now. The cam helps the engine breath better & the extra fuel makes a world of difference.
Intermediate
Joined: Jun 2018
Posts: 32
Likes: 6
From: Indiana
that seems a little harsh just for a comment....