User Tag List

Reply
 
Thread Tools Rate Thread Display Modes
Old 10-07-2020, 01:56 PM #1
sharpie223 sharpie223 is offline
Junior Member
 
Join Date: Sep 2018
Location: washington state
Posts: 24
sharpie223 is on a distinguished road
sharpie223 sharpie223 is offline
Junior Member
 
Join Date: Sep 2018
Location: washington state
Posts: 24
sharpie223 is on a distinguished road
Uncoated SS header temps?

Not sure if this is the best place to post since it's for a 2005 v6 or if engines/etc. would have been better.

Anyway, I bought some stainless short tube headers that are uncoated, I was wondering if anyone is running uncoated headers and if they had any temperature issues to deal with? I can get these coated, but due to questionable longevity of the coating I will likely need to heat wrap all nearby wires and tubes. Also considering creating a tunnel out of heat shield to fit over these instead of wrapping everything else. If someone can tell me that there's no real heat issue, over stock, then all the better.

All the info I have found so far is mostly from racing forums dealing with much higher heat rates.
sharpie223 is offline   Reply With QuoteReply With Quote
Old 10-08-2020, 07:04 PM #2
TimeCrunch TimeCrunch is offline
Member
 
Join Date: Oct 2019
Location: California
Posts: 34
Real Name: Mr.Crunch
TimeCrunch is on a distinguished road
TimeCrunch TimeCrunch is offline
Member
 
Join Date: Oct 2019
Location: California
Posts: 34
Real Name: Mr.Crunch
TimeCrunch is on a distinguished road
Also interested! I got the v8 though
TimeCrunch is offline   Reply With QuoteReply With Quote
Old 10-12-2020, 03:40 PM #3
sharpie223 sharpie223 is offline
Junior Member
 
Join Date: Sep 2018
Location: washington state
Posts: 24
sharpie223 is on a distinguished road
sharpie223 sharpie223 is offline
Junior Member
 
Join Date: Sep 2018
Location: washington state
Posts: 24
sharpie223 is on a distinguished road
From what I can tell most people with 4th gens are using thorley headers which I believe come coated as a standard, limiting how much experience there might be on the subject. I think jba made/makes some uncoated but I don't know how many actually use them.

My plan for now is just to be on the safe side. I am going to try the eastwood internal exhaust coating and hope it sticks long term. Just in case, I will also place a heat shield over the top, a shield over the starter, and wrap and nearby wires/fuel lines with aluminized loom. Looks like the alternator on the driver's side and dipstick tube on the passenger side will also need addressed with heat shield.

On a Ferrari forum it appears as though it's popular to enclose the headers on a header blanket, so both top and bottom are covered, it looks easy but I'm worried that it could cause similar issues to wrapping, does anyone have any experience with something like that?
sharpie223 is offline   Reply With QuoteReply With Quote
Old 10-12-2020, 04:50 PM #4
Inv4drZm's Avatar
Inv4drZm Inv4drZm is offline
Senior Member
 
Join Date: Sep 2015
Location: Kansas
Age: 28
Posts: 4,300
Inv4drZm has a reputation beyond repute Inv4drZm has a reputation beyond repute Inv4drZm has a reputation beyond repute Inv4drZm has a reputation beyond repute Inv4drZm has a reputation beyond repute Inv4drZm has a reputation beyond repute Inv4drZm has a reputation beyond repute Inv4drZm has a reputation beyond repute Inv4drZm has a reputation beyond repute Inv4drZm has a reputation beyond repute Inv4drZm has a reputation beyond repute
Inv4drZm Inv4drZm is offline
Senior Member
Inv4drZm's Avatar
 
Join Date: Sep 2015
Location: Kansas
Age: 28
Posts: 4,300
Inv4drZm has a reputation beyond repute Inv4drZm has a reputation beyond repute Inv4drZm has a reputation beyond repute Inv4drZm has a reputation beyond repute Inv4drZm has a reputation beyond repute Inv4drZm has a reputation beyond repute Inv4drZm has a reputation beyond repute Inv4drZm has a reputation beyond repute Inv4drZm has a reputation beyond repute Inv4drZm has a reputation beyond repute Inv4drZm has a reputation beyond repute
How are uncoated headers different than uncoated stock manifolds in terms of heat? I would guess there wouldn't be much difference unless they were routed differently.
__________________
2005 4R Sport 4WD "The last of the V8s!" - Custom TIG'd SS Dual Exhaust - King 2.5" +2 LT. - ARB Front & Rear - 37's - Dana 60 - Build Thread
2005 Tundra 2WD Regular Cab V8 - Chopped Frame - Short Bed Swap
1977 Celica Liftback - LFX Swap - Build Thread
Inv4drZm is offline   Reply With QuoteReply With Quote
Old 10-12-2020, 07:29 PM #5
sharpie223 sharpie223 is offline
Junior Member
 
Join Date: Sep 2018
Location: washington state
Posts: 24
sharpie223 is on a distinguished road
sharpie223 sharpie223 is offline
Junior Member
 
Join Date: Sep 2018
Location: washington state
Posts: 24
sharpie223 is on a distinguished road
My understanding is more surface area for heat to radiate from. 3 tubes rather than approximately 1. I suppose each tube only has a third of the heat load traveling through it but assuming it's idling, I could see them reaching the same temp anyway.

I'm fully willing to admit it of I'm wrong about that. As I don't have much experience on the matter that's why I ask. I could be worried about nothing.
sharpie223 is offline   Reply With QuoteReply With Quote
Reply

Tags
fit , headers , heat , uncoated , wrap

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
FS in CA: ESEE 4 Uncoated & Chris Reeve Knives Small Micarta Sebenza RPC For Sale: Non-T4R Items 2 09-24-2017 04:49 PM
Antifreeze Temps cferry7 Classic T4Rs 2 09-30-2015 11:53 AM
temps, air intake, and coolant temps on a stock runner the great him 3rd gen T4Rs 13 07-15-2014 10:18 PM
Shock temps Tooltime19 4th Gen T4Rs 3 05-31-2014 01:04 PM
Are my temps too high? amalik 3rd gen T4Rs 18 05-13-2014 09:07 PM

Powered by vBadvanced CMPS v3.2.2

All times are GMT -4. The time now is 08:34 AM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.
Feedback Buttons provided by Advanced Post Thanks / Like (Lite) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.
User Alert System provided by Advanced User Tagging (Lite) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.
***This site is an unofficial Toyota site, and is not officially endorsed, supported, authorized by or affiliated with Toyota. All company, product, or service names references in this web site are used for identification purposes only and may be trademarks of their respective owners. The Toyota name, marks, designs and logos, as well as Toyota model names, are registered trademarks of Toyota Motor Corporation***Ad Management plugin by RedTyger
 
Copyright © 2020