Eric Barbaric
Full Member
 Offline
Posts: 389
The Cure
|
 |
« on: February 01, 2010, 07:18:44 PM » |
|
The heater core bypass hose that I installed three years ago has now developed a good kink in it that restricts flow.
Are there any creative solutions for a bypass hose that won't kink? Is there a pre-formed hose for a 74 Chevelle I should buy, or what?
I'm also curious to know if anyone thinks this kink might have had a significant performance impact. Probably not, as most of my racing sessions are short 8-lap affairs.
I never noticed an overheating situation.
Eric
|
|
|
|
|
Logged
|
|
|
|
Jim Boemler
Driver
Needs a life!
Offline
Posts: 1303
I don't think we're in Memphis anymore, Toto!
|
|
« Reply #1 on: February 01, 2010, 09:52:25 PM » |
|
If you take the stock hose with the bend in it, and clock it properly, it bends perfectly back again to form a bypass hose.
jim
|
|
|
|
|
Logged
|
Overheard at Alamagordo: "Just testing"
|
|
|
|
Kyle Freiheit
|
|
« Reply #2 on: February 02, 2010, 10:37:11 AM » |
|
How many people have done this? What are the benefits? Drawbacks?
Kyle
|
|
|
|
|
Logged
|
|
|
|
|
Steve Scheifler
|
|
« Reply #3 on: February 02, 2010, 10:45:02 AM » |
|
Benefit: Eliminates a leaky heater core.
Drawback: No defog on rainy days or heat on cold ones. (I don't count the small potential for improved engine cooling in the case of running hot)
Around here I absolutely prefer to keep the core in the circuit, theough the soft pipes from the core are a real PIA.
|
|
|
|
|
Logged
|
Steve Scheifler - Candidate for Spec Miata Tech Czar
|
|
|
Eric Barbaric
Full Member
Offline
Posts: 389
The Cure
|
|
« Reply #4 on: February 02, 2010, 11:20:42 AM » |
|
Kyle, many people do it simply because it eliminates a point of failure in the cooling system.
Someone posted about having hot water squirting onto your legs when the thing fails, so lots of people jumped ship based on that fear. Fear is an amazingly powerful motivator. Too bad our politicians are perfecting their fear-craft, but I digress.
I just use RainX on the inside of my windshield and haven't had a problem. However, I'm always nervous about not having a defroster/defogger, so I'm actually planning to re-engage it the next time I have the dash out - the reason being that I never reinstalled all that plastic ducting that was back in there.
Then, if it fails, doing the bypass thing again is easy enough.
|
|
|
|
|
Logged
|
|
|
|
|
Kyle Freiheit
|
|
« Reply #5 on: February 02, 2010, 12:07:08 PM » |
|
A defroster isn't a necessity in the Spring and fall racing in the NW but it sure is nice. I think I am going to leave mine in for now OR just connect for spring/fall and/or enduros.
Kyle
|
|
|
|
|
Logged
|
|
|
|
|
Steve Scheifler
|
|
« Reply #6 on: February 02, 2010, 12:31:04 PM » |
|
You may get slightly better coolant flow without it, especially if it is old and clogging up, but I suspect that the small metal tubing along the engine is the limiting factor (on the 1.6). And radiators are tricky, more flow doesn’t necessarily mean better cooling.
I use the Rain-X brand anti-fog stuff on the inside and it’s pretty darn good, but I still like some heated air over it on a rainy day.
|
|
|
|
|
Logged
|
Steve Scheifler - Candidate for Spec Miata Tech Czar
|
|
|
|
Weekend Warrior
|
|
« Reply #7 on: February 02, 2010, 02:06:16 PM » |
|
I use the heater/defrost whenever racing in the rain. The heater helps to dry off wet shoes/pedals and the defrost clears up the windshield.
|
|
|
|
|
Logged
|
|
|
|
Jim Boemler
Driver
Needs a life!
Offline
Posts: 1303
I don't think we're in Memphis anymore, Toto!
|
|
« Reply #8 on: February 02, 2010, 04:14:01 PM » |
|
My fear would be that the lack of circulation near the back of the head would create a hot spot in that area. I only did this on mine before I found the technique for restoring the roundness to the copper pipes; I had a large leak I couldn't control.
I would be forced to do the bypass if the heater core itself ever failed, however, since my cage makes the dash no longer removable.
jim
|
|
|
|
|
Logged
|
Overheard at Alamagordo: "Just testing"
|
|
|
|
|
Eric Barbaric
Full Member
Offline
Posts: 389
The Cure
|
|
« Reply #10 on: February 04, 2010, 10:59:36 PM » |
|
Cool. Thanks John!
|
|
|
|
|
Logged
|
|
|
|
|
