Bloodshot Posted February 18, 2018 Share Posted February 18, 2018 So I pulled the manifold off the riv so I could put one on that wasn't broken. The one I got to replace it had a heat riser but it is seized up. Can you take them apart? I saw a kit online that seemed to have the parts needed but I'm not sure how I'd get this thing apart to rebuild it. Anyone have any experience with these things? Thanks. Here's a link to the kit I found: http://www.fusickautomotiveproducts.com/prodinfo.asp?number=HRV659 And I'm attaching a photo of my seized heat riser. Link to comment Share on other sites More sharing options...
Turbinator Posted February 19, 2018 Share Posted February 19, 2018 On 2/18/2018 at 10:19 AM, Bloodshot said: So I pulled the manifold off the riv so I could put one on that wasn't broken. The one I got to replace it had a heat riser but it is seized up. Can you take them apart? I saw a kit online that seemed to have the parts needed but I'm not sure how I'd get this thing apart to rebuild it. Anyone have any experience with these things? Thanks. Here's a link to the kit I found: http://www.fusickautomotiveproducts.com/prodinfo.asp?number=HRV659 And I'm attaching a photo of my seized heat riser. You might consider buying an NOS unit as opposed to rebuild. It doesn’t look like much, but that thing controls your choke. I took mine off when it froze up and had an electronic choke put on the carb. Works great. 1 Link to comment Share on other sites More sharing options...
Bloodshot Posted February 20, 2018 Author Share Posted February 20, 2018 Thanks. I'll look into the electronic chokes. Link to comment Share on other sites More sharing options...
RivNut Posted February 20, 2018 Share Posted February 20, 2018 You need to realize that if you get rid of the heat riser and bolt the exhaust pipe to the manifold, you're moving your pipes closer to the chassis. Do some work on thar bad riser so that it now becomes a spacer. 2 Link to comment Share on other sites More sharing options...
Bloodshot Posted February 21, 2018 Author Share Posted February 21, 2018 I was thinking about that. Thanks for confirming my suspicions. Link to comment Share on other sites More sharing options...
Turbinator Posted February 22, 2018 Share Posted February 22, 2018 23 hours ago, Bloodshot said: I was thinking about that. Thanks for confirming my suspicions. 23 hours ago, Bloodshot said: I was thinking about that. Thanks for confirming my suspicions. I know a seller that has a new old stock riser if you want go that route. PM me and lll give you his contact info. Red Riviera Bob Link to comment Share on other sites More sharing options...
RivNut Posted February 22, 2018 Share Posted February 22, 2018 On 2/20/2018 at 8:13 AM, Bloodshot said: Thanks. I'll look into the electronic chokes. Chances are that you won't be driving the car in extreme conditions when you need to use the choke that much anyway. The shop manual states that this choke thermostat will cause slow engine warm up or stumbling when it is stuck open - same as not having one. But it also stares that operation should be checked at 70°. If you're a fair weather driver like most of us, you'll not really notice this. 1 Link to comment Share on other sites More sharing options...
Bloodshot Posted February 22, 2018 Author Share Posted February 22, 2018 5 hours ago, Red Riviera Bob said: I know a seller that has a new old stock riser if you want go that route. PM me and lll give you his contact info. Red Riviera Bob It's tempting, but I think I'll go with the electric choke. A NOS unit will probably cost a quite a bit. I'm sure the conversion to electric will be fine for me. Thanks for the offer. Link to comment Share on other sites More sharing options...
Turbinator Posted February 22, 2018 Share Posted February 22, 2018 45 minutes ago, Bloodshot said: It's tempting, but I think I'll go with the electric choke. A NOS unit will probably cost a quite a bit. I'm sure the conversion to electric will be fine for me. Thanks for the offer. Well, it’s the best way-with the electronic choke. As I said that is the way I went with the electronic choke. Secondly, the choke the guy has might-might not fit your car because he on,y has stuff from 63-65. I assumed, I was wrong, you had a 63. It all works out in the end. Red Riviera Bob Link to comment Share on other sites More sharing options...
68RIVGS Posted February 22, 2018 Share Posted February 22, 2018 If your a fair weather driver like most of us northern classic Riviera owners you probably don't even need it Steve. But if it is removed you will need to add a spacer to compensate for it. The underside in your photo is tapered for the flared exhaust pipe. You could also use the old unit minus the baffle, spring, shaft and counter weight as a spacer too. Just weld the baffle shaft holes closed to prevent any exhaust leak, and install a new Felpro exhaust gasket on the flat side. The electric choke modification will help with cold weather starts when needed ! Link to comment Share on other sites More sharing options...
RivNut Posted February 22, 2018 Share Posted February 22, 2018 Here are some pictures of an exhaust manifold "donut" that I found that fits inside the manifold and creates a ball to fit into the cone of the pipe. Sorry that I don't have a part number, but if you take your manifold into a NAPA store or other jobber, you can tell them what you want and they can probably find it for you. If I find the part #, I'll add it. Ed Link to comment Share on other sites More sharing options...
telriv Posted February 22, 2018 Share Posted February 22, 2018 Those types of gaskets usually can be found on Oldsmobile's. Link to comment Share on other sites More sharing options...
BMac Posted February 23, 2018 Share Posted February 23, 2018 Felpro 60556 is the part number. It's what I just used. Link to comment Share on other sites More sharing options...
Bloodshot Posted February 23, 2018 Author Share Posted February 23, 2018 OK, I'm confused. There are a few different versions on Ebay of which electric choke I think I need with slightly different part numbers. None of them listed seem to be for my year carb. Can anyone tell me which one I need? I've got a '66 with the 425 and Rochester 4MC Quadrajet. Thanks. Link to comment Share on other sites More sharing options...
RivNut Posted February 23, 2018 Share Posted February 23, 2018 2 hours ago, Bloodshot said: OK, I'm confused. There are a few different versions on Ebay of which electric choke I think I need with slightly different part numbers. None of them listed seem to be for my year carb. Can anyone tell me which one I need? I've got a '66 with the 425 and Rochester 4MC Quadrajet. Thanks. Any particular reason you're shopping on eBay? Google Carbs Unlimited. They have one for a Q-jet for <$20. It takes a housing, a spring, and one wire to make them work. Plus, you can talk with a salesperson who would know exactly what you need if you have questions. Link to comment Share on other sites More sharing options...
Bloodshot Posted February 23, 2018 Author Share Posted February 23, 2018 Shopping on Ebay for cheapest price and free shipping. Link to comment Share on other sites More sharing options...
Northeast Riv. 2 Posted September 24, 2022 Share Posted September 24, 2022 I know this an old thread, but………I need to find a heat riser for my 1965 Buick riviera, 401 engine any help would be greatly appreciated thanks Joe Link to comment Share on other sites More sharing options...
RivNut Posted September 24, 2022 Share Posted September 24, 2022 3 hours ago, Northeast Riv. 2 said: I know this an old thread, but………I need to find a heat riser for my 1965 Buick riviera, 401 engine any help would be greatly appreciated thanks Joe If you do not live in an area that needs that heat to the carb and you don't drive the car in cold weather, eliminate it. Link to comment Share on other sites More sharing options...
Northeast Riv. 2 Posted September 25, 2022 Share Posted September 25, 2022 Thanks for reply. I usually drive up till the snow flies, then put her away till spring. So that involves some cold morn starts. I would like it to be as easy to start as in warm weather. If I can stay original I should install a working heat riser. The one I just removed is frozen open, I am now soaking to see if I can free it. Are you aware of any rebuild kits available or better yet a NOS heat riser maybe? Thanks Joe Link to comment Share on other sites More sharing options...
telriv Posted September 25, 2022 Share Posted September 25, 2022 I've lived in Ct. my whole life as has my '64 Riv. I bought new. Haven't had a functioning heat riser been frozen open for over 50 years. No problems especially if it's only used in the warmer months. Tom T. Link to comment Share on other sites More sharing options...
RivNut Posted September 26, 2022 Share Posted September 26, 2022 You can live with it being frozen open. Remember the guy who bought this car originally. It was the car he drove to and from the bank, law office, or .?????. He had no time to let his car warm up or deal with anything not perfect or he’d trade it in on something newer. Even when new, these cars did not function as well as the computerized fuel injections you drive today. 1 Link to comment Share on other sites More sharing options...
Northeast Riv. 2 Posted September 26, 2022 Share Posted September 26, 2022 After much struggling with trying to free up my heat riser, with nothing accomplished……….I have decided to reinstall with it open! Thanks for the all the advice thanks joe Link to comment Share on other sites More sharing options...
telriv Posted September 26, 2022 Share Posted September 26, 2022 Joe, I hope that the suggestions I made had an influence on your decision. Tom T. Link to comment Share on other sites More sharing options...
Northeast Riv. 2 Posted September 26, 2022 Share Posted September 26, 2022 Indeed they did! I struggled with heating then soaking that damn heat riser and no movement! Okay I said the hell with being an purist, let’s move this project along…hence unit installed just like it was. Thanks Joe Link to comment Share on other sites More sharing options...
Renato66 Posted January 14 Share Posted January 14 I know this is an older thread but I am looking for a heat riser delete for a 401 nailhead (66 skylark). Really hoping to find one. Link to comment Share on other sites More sharing options...
telriv Posted January 14 Share Posted January 14 Re-read the above posts. An Oldsmobile gasket works fine as a spacer. Tom T. Link to comment Share on other sites More sharing options...
RivNut Posted January 14 Share Posted January 14 I took the flapper out of the heat riser from my 64 Riviera. It’s now a perfect spacer. Link to comment Share on other sites More sharing options...
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