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My heat riser was surprisingly still working despite my truck's history of prolonged neglect. I recently removed my manifold as a part of an engine rebuild, and disassembled the heat riser prior to painting. A very small part of the spring that fits into the slot of the shaft broke off in the process. The part that broke off was probably only .25 of an inch or so. It was "angled", however, and the spring will be positioned a little differently now because of the missing piece. Do you think my heat riser will still work with a "shortened" spring? Are replacement springs available? If so, where? My engine is a 215 cid I6.
Thanks.
Here are a couple of pics:
P.S. The part in the middle of the first pic is not the piece that broke off. It is a separate part that is rusty but otherwise undamaged. The part that broke off is/was in the center of the spring.
In a related high jack, my 55 F350 does not have a heat riser. I don't know why. Will this affect how fast the engine warms up? I don't run it in cold weather much.
My heat riser was surprisingly still working despite my truck's history of prolonged neglect. I recently removed my manifold as a part of an engine rebuild, and disassembled the heat riser prior to painting. A very small part of the spring that fits into the slot of the shaft broke off in the process. The part that broke off was probably only .25 of an inch or so. It was "angled", however, and the spring will be positioned a little differently now because of the missing piece. Do you think my heat riser will still work with a "shortened" spring? Are replacement springs available? If so, where? My engine is a 215 cid I6.
P.S. The part in the middle of the first pic is not the piece that broke off. It is a separate part that is rusty but otherwise undamaged.
The part that broke off is/was in the center of the spring.
See lower parts catalog pic and post the basic part number of the part you need.
In my "research" into these things I found that parts are usually pretty expensive when you can find them, only as an assembly. Usually have to buy the whole shootin' match w/weight and everything. But the spring itself seems universal among manufacturers, about $8 bucks, if you dig around can probably find one somewhere. The more I read, it just seemed like nothing to lose sleep over.
Yes, it will take a little longer to warm up in colder weather without it. Thing is they often would rust shut causing more trouble. A lot of folks wired them open "back in the day" to avoid this.
Thanks for the offer, Abe. We'll have to see what the experts say regarding compatibility. Searching on line, I saw some springs that looked just like mine, but they seemed to be for Chevys from the 1930's, 40's and early 50's. Would a Chevy spring work?
Tedster9, are you saying the Chevy springs will probably work? I could buy just the spring for a reasonable price, and at least from the pic, it looked right.
NumberDummy, thanks for the part number. Do you know of any suppliers that carry that part?
Well can't say for certain without comparing them directly, but they sure look like they'd work. I was ready to pull the trigger on a spring, but from what I've read the system was more trouble than it was worth. Have installed Rams horn manifolds since then, so don't even have a heat riser system anymore.
Tedster9, are you saying the Chevy springs will probably work? I could buy just the spring for a reasonable price, and at least from the pic, it looked right.
NumberDummy, thanks for the part number. Do you know of any suppliers that carry that part?
I didn't give you the part number, I said look at the pic and post the basicpart number for the part you need.
Basic part numbers only shown in pics, text section of the catalog required to get the complete part number by adding the apropos prefix & suffix.
I then said your 9467 (basic part number) coil spring has seen better days. If this is what you want:
B4A-9467-A .. Exhaust Thermostat Control Valve Coil Spring / Obsolete
1948/64 all I-6's except 1961/64 262 I-6.
NOS PARTS LTD in Waxahachie TX has 1 = 972-937-2201.
MILLER OBSOLETE PARTS in Binghamton NY has 1 = 607-722-5371.
Thanks, NumberDummy, for the clarification and additional information. Part # B4A-9467-A I believe is the part I need. I'll check with the venders you list.
You always seem to be hovering about like a guardian angel helping poorly informed enthusiasts like me through the vicissitudes of our projects. Thank you again.
Abe, your part looks about like mine before it broke. I'll check out Number Dummy's venders, and see If I can get a new one. Maybe you should keep yours as a back-up. The springs are probably the most vulnerable part of the heat riser system.
Stu, school me here. If the heat riser is froze in the open position (or the flap is missing) wouldn't the heat from the exhaust be deflected toward the carburetor, and wouldn't that be bad? If you are not using a heat riser, should the flap be open or closed? Thanks.
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