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It appears that the throttle dashpot on the '66 Toronado is a pretty specific part and, as far as I can tell, appears to be unobtanium for some reason. Nothing on Ebay......nothing anywhere. Looking at it, the dashpot seems to open the intake manifold to the atmosphere when you lift your foot off the gas to help lean out the intake charge a touch to avoid backfires.
My Toro has the annoying AIR system on it and I'd love to remove that system but in order to get it to the regular 49 State version, I think I'll need a dashpot. Anyone have any sources for this? Maybe some other dashpot from another car could work? In the parts catalog it's referred to as the "Check Assy", PN 392902.
Not mine, stock internet photo
Not mine, stock internet photo Assy manual PN matches what's shown in the Master Parts Catalog.
Of course I Googled it and of course I saw the one on Olds Obsolete. By the time that part gets to me here in Canada I bet I'd be pushing 600 bucks and if you think I'm going to pay 600 bucks for a cheap little throttle dashpot then think again. I will have the best working A.I.R system in North America before I pay 600 bucks for that part. It's also showing out of stock
I do not know how that website sells a single part, honestly. The amounts they charge for anything at all is staggering. I saw an outer CV axle joint for a Toronado on there for 750 bucks.
Try John Dorcey in Las Vegas - 702-690-8077, or toroguy@msn.com. From his 1st generation Toro "junkyard," maybe he has a used dashpot that is still operable. It's worth a try - you might get lucky.
Try John Dorcey in Las Vegas - 702-690-8077, or toroguy@msn.com. From his 1st generation Toro "junkyard," maybe he has a used dashpot that is still operable. It's worth a try - you might get lucky.
Ah yes, that's a great idea thanks. I have a few other parts I'm looking for so maybe I could get lucky and make a larger order.
Do you know what the correct part number carburetor would be for that application ? If so see if someone is selling a carb on E-bay. Seems like most of the time they leave the dashpots attached. They might even sell it separately. Cant hurt to ask.
Do you know what the correct part number carburetor would be for that application ? If so see if someone is selling a carb on E-bay. Seems like most of the time they leave the dashpots attached. They might even sell it separately. Cant hurt to ask.
Yeah, it's 7026250. I look on Ebay all the time for those and haven't seen the dashpots come with any of the carbs. It's actually attached to the intake manifold rather than the carb itself so you're less likely to get it with the carb anyway. I'll keep an eye on Ebay though.
Do you know what the correct part number carburetor would be for that application ? If so see if someone is selling a carb on E-bay. Seems like most of the time they leave the dashpots attached. They might even sell it separately. Cant hurt to ask.
On the 1966 carbs the dashpot bolts to a bracket on the intake. It is not part of the carb.
I gave up looking for one. My carb guy says you really dont need one for the car to run fine. Havent gotten there yet so I dunno
The purpose of the dashpot is to slightly slow the drop in engine RPM when you take your foot off the accelerator pedal, maybe like from 1000 rpm down to actual idle. I've never driven my Toro without a dashpot, but maybe that prevents stalling? It was obviously put there for a reason.
The purpose of the dashpot is to slightly slow the drop in engine RPM when you take your foot off the accelerator pedal, maybe like from 1000 rpm down to actual idle. I've never driven my Toro without a dashpot, but maybe that prevents stalling? It was obviously put there for a reason.
Yours a '66? I can't remember what you have.
On the '66 and '67, the dashpot has a vacuum line on it with an in line air filter (well, from the factory it did). I assume that it allows atmospheric pressure into the manifold momentarily when you lift your foot rather than just slowing the throttle when it closes. I'm really not sure why they did it like this as it seems later Toros just had the regular "slowing" type dashpot.....I think.
Last edited by ourkid2000; Jul 4, 2025 at 02:11 PM.
On the '66 and '67, the dashpot has a vacuum line on it with an in line air filter (well, from the factory it did). I assume that it allows atmospheric pressure into the manifold momentarily when you lift your foot rather than just slowing the throttle when it closes. I'm really not sure why they did it like this as it seems later Toros just had the regular "slowing" type dashpot.....I think.
Yes, my Toro is a '66, and I know that I had to replace the dashpot on my first '66, but I don't remember the symptom(s) that required the replacement.
Rather than try without actual mechanic/engineer experience, I'll let others explain the dashpot's function and operation.
Yes, my Toro is a '66, and I know that I had to replace the dashpot on my first '66, but I don't remember the symptom(s) that required the replacement.
Rather than try without actual mechanic/engineer experience, I'll let others explain the dashpot's function and operation.
I don't pretend to be any kind of expert or anything and the CSM doesn't explain the operation of the dashpot on the regular V8. However, it does explain the operation of the air intake bleed valve on the K-19 version. I assume that the dashpot performs a similar function, given that it's hooked to intake manifold vacuum and has an air filter in line:
"The air intake bleed valve injects air into the intake manifold, momentarily as the throttle is closed. This valve is controlled by intake manifold vacuum and is required to prevent exhaust system backfires on deceleration. On deceleration, the mixture in the intake manifold is too rich to burn and ignites when combined with the injected air in the exhaust manifold"
Now, obviously the regular V8 doesn't have injected air into the exhaust manifold but it seems to me that they're going after the same problem. Perhaps it isn't as big of a problem on the regular V8's?
Over the years I've run into several cars with the A.I.R. systems. The one's I've plugged I just used small pipe thread plugs, either brass alloy or steel.
Over the years I've run into several cars with the A.I.R. systems. The one's I've plugged I just used small pipe thread plugs, either brass alloy or steel.
Ok that's great info, pretty straightforward. Thanks!
Well look what just arrived in the mail! Did a little digging and a bunch of searching around and with a bit of persistence, I got myself a working original for 45 bucks! Even came with the mounting bracket. I'll clean it up and it should be good to go.
Well look what just arrived in the mail! Did a little digging and a bunch of searching around and with a bit of persistence, I got myself a working original for 45 bucks! Even came with the mounting bracket. I'll clean it up and it should be good to go.
Been following this discussion. I just got my '67 back after a long, protracted 13-year restoration and the dashpot was missing. Found 3 in my spare parts box, two with vacuum lines as from the factory and one without. All 3 were on the slate-blue painted brackets so I suspect I plucked them from '66s I had access to in a boneyard in NE PA 30 years ago. I'm scratching my head as to how the one without the vacuum line (just the threaded stud) would work, but that's what I put back on mine since the other two wouldn't hold vacuum with a Mighty Vac.
Been following this discussion. I just got my '67 back after a long, protracted 13-year restoration and the dashpot was missing. Found 3 in my spare parts box, two with vacuum lines as from the factory and one without. All 3 were on the slate-blue painted brackets so I suspect I plucked them from '66s I had access to in a boneyard in NE PA 30 years ago. I'm scratching my head as to how the one without the vacuum line (just the threaded stud) would work, but that's what I put back on mine since the other two wouldn't hold vacuum with a Mighty Vac.
The one you put on there, did it thread into the same bracket or did you have to do any modifying? I have no idea what the difference between the vacuum vs. non-vacuum dashpot would be but I suspect it's not too much different and they both would accomplish the same thing. I'd like to source an alternate dashpot (non-vacuum) so I'm curious as to what you used.
The one you put on there, did it thread into the same bracket or did you have to do any modifying? I have no idea what the difference between the vacuum vs. non-vacuum dashpot would be but I suspect it's not too much different and they both would accomplish the same thing. I'd like to source an alternate dashpot (non-vacuum) so I'm curious as to what you used.
It threaded onto the same bracket; in fact, it was already on a correct bracket that was even painted slate blue, but I removed it since I had another bracket already on the intake and adjusted it to the .040 gap/throttle closed spec specified by the shop manual.
It threaded onto the same bracket; in fact, it was already on a correct bracket that was even painted slate blue, but I removed it since I had another bracket already on the intake and adjusted it to the .040 gap/throttle closed spec specified by the shop manual.
The'68-'70 Toro 455 used a dashpot that didn't connect to the vacuum port. I bet that's what you got there. They were slate blue engines as well so it checks the boxes. Works good? No weird stumbling or backfires on decel?
The'68-'70 Toro 455 used a dashpot that didn't connect to the vacuum port. I bet that's what you got there. They were slate blue engines as well so it checks the boxes. Works good? No weird stumbling or backfires on decel?
Ahhh, right - forgot about those. I haven't driven it yet to see (and probably can't now), but since I didn't have those issues before I doubt this dashpot would cause them. I'm now dealing with a much bigger issue - you'll see my post in the big block forum...feel free to weigh-in but let's just say I'm sick to my stomach at what I just found.
