Rusty Dawg Posted June 17, 2022 Report Share Posted June 17, 2022 Howdy, I recently acquired another 1960 222 truck that also had the original manifolds along with the original single barrel Hitachi carb just like my other truck. I am swapping out the manifold set up along with the carb in my new purchase mainly so I can keep the Hitachi carb as an extra. I went though the entire carb and the only 2 items that needed replacing was the accelerator pump plunger(not sure that's what it's called) and the dust boot that it goes through on top of the carb housing. I found a plunger that might work, but I am curious if anyone might be able to tell me how to remove the old one and install the new one. It seem riveted on, so do I drill out and then either rivet on the new one or use a screw to secure? Also, does anyone have a line on where I might be able to purchase a new boot? Thanks! Quote Link to comment
datzenmike Posted June 17, 2022 Report Share Posted June 17, 2022 That will need to be replaced entirely. There's no 'fixing' it. The ones I'm used to working with are like the one below with viton? seal. I have had even earlier ones that used a leather seal. Do these look like they would fit? http://www.carburetion.com/images/Inventory/832F.jpg Quote Link to comment
Stoffregen Motorsports Posted June 17, 2022 Report Share Posted June 17, 2022 Steve had a brilliant discovery when he was rebuilding his 320 carb. He used a generic accelerator pump from a quadra-jet. I think. @difrangia- what was it that you used? At least I think it was Steve... Quote Link to comment
difrangia Posted June 18, 2022 Report Share Posted June 18, 2022 (edited) 22 hours ago, Stoffregen Motorsports said: Steve had a brilliant discovery when he was rebuilding his 320 carb. He used a generic accelerator pump from a quadra-jet. I think. @difrangia- what was it that you used? At least I think it was Steve... I believe it was Moses (320newb) who came up with the Q-Jet pump. I probably archived his final find on the A-Pump piston. I have a Weber 32/36 on our 320. I looked it up; it's in page #44 of his green truck build thread. Edited June 18, 2022 by difrangia 1 1 Quote Link to comment
Rusty Dawg Posted June 19, 2022 Author Report Share Posted June 19, 2022 On 6/16/2022 at 9:11 PM, datzenmike said: That will need to be replaced entirely. There's no 'fixing' it. The ones I'm used to working with are like the one below with viton? seal. I have had even earlier ones that used a leather seal. Do these look like they would fit? http://www.carburetion.com/images/Inventory/832F.jpg It doesn't look like the old one, but it's worth a shot. I had my other Hitachi carb rebuilt and they were able to replace the leather plunger on it. I was trying to avoid trying to send this one down to fix, but maybe I'll do so. Quote Link to comment
datzenmike Posted June 19, 2022 Report Share Posted June 19, 2022 Long time ago ('60s) I was told that the leather for the plungers on chevs ect. were made from kangaroo hide. Something about being able to survive gasoline better. Has anyone ever heard this??? Quote Link to comment
Stoffregen Motorsports Posted June 20, 2022 Report Share Posted June 20, 2022 Nope, but you could fill a book with things I don't know... If you're intent on replacing the original, try one of the hydraulic restorers like Apple Hydraulics or White Post Restorations. I believe they are both in New England. 1 Quote Link to comment
320 Newb Posted July 18, 2022 Report Share Posted July 18, 2022 This is the quadrajet with the correct diameter: https://www.ebay.com/itm/113598974867?_trkparms=amclksrc%3DITM%26aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20160908105057%26meid%3D630bf86d409c45108e929059cd198f4e%26pid%3D100675%26rk%3D2%26rkt%3D15%26sd%3D185503999720%26itm%3D113598974867%26pmt%3D1%26noa%3D1%26pg%3D2380057&_trksid=p2380057.c100675.m4236&_trkparms=pageci%3A05294bd9-06d0-11ed-a09b-8205795eccaa|parentrq%3A12c9f95d1820acf348db3418ffed0819|iid%3A1 You'll have to replace the spring retainer with the double lip cup. It's a tight fit so purchase two in case one tears and be gentle. 2 1 Quote Link to comment
Stoffregen Motorsports Posted July 20, 2022 Report Share Posted July 20, 2022 I knew that info was around somewhere. Quote Link to comment
Rusty Dawg Posted July 21, 2022 Author Report Share Posted July 21, 2022 On 7/18/2022 at 12:31 PM, 320 Newb said: This is the quadrajet with the correct diameter: https://www.ebay.com/itm/113598974867?_trkparms=amclksrc%3DITM%26aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20160908105057%26meid%3D630bf86d409c45108e929059cd198f4e%26pid%3D100675%26rk%3D2%26rkt%3D15%26sd%3D185503999720%26itm%3D113598974867%26pmt%3D1%26noa%3D1%26pg%3D2380057&_trksid=p2380057.c100675.m4236&_trkparms=pageci%3A05294bd9-06d0-11ed-a09b-8205795eccaa|parentrq%3A12c9f95d1820acf348db3418ffed0819|iid%3A1 You'll have to replace the spring retainer with the double lip cup. It's a tight fit so purchase two in case one tears and be gentle. Not exactly sure how to remove the old one and replace with this one. Quote Link to comment
320 Newb Posted July 21, 2022 Report Share Posted July 21, 2022 When I did it, the retaining spring comes off the leather cup and it pulls off. Then I lubed the double lip cup and gently stretched it over the bottom of the pump and into place. 1 Quote Link to comment
Rusty Dawg Posted July 21, 2022 Author Report Share Posted July 21, 2022 17 hours ago, 320 Newb said: When I did it, the retaining spring comes off the leather cup and it pulls off. Then I lubed the double lip cup and gently stretched it over the bottom of the pump and into place. Ok, I'll try that. I had bought an extra one as you mentioned to use on a Nikki carb. I did see another plunger on amazon on the same page as the link you shared. Did you by chance try this one already? It is the same diameter and has a spring. https://www.ebay.com/itm/113889779267?_trkparms=amclksrc%3DITM%26aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D240418%26meid%3De9e028771edb486d9d2b9b7882e3a0b1%26pid%3D101196%26rk%3D1%26rkt%3D12%26sd%3D113598974867%26itm%3D113889779267%26pmt%3D1%26noa%3D0%26pg%3D2047675%26algv%3DSimplAMLv9PairwiseUnbiasedWebWithSearchFilterPromotion&_trksid=p2047675.c101196.m2219&amdata=cksum%3A113889779267e9e028771edb486d9d2b9b7882e3a0b1|enc%3AAQAHAAABEDNdRuflTEDzBfTKX%2BqmXH8pf%2B8V9puPczI5H7qtyLlQg%2FPd3LbQ9nGE%2BOPvEM%2FBkrrZqk%2BWE480G9zjGUHm3cDk1eiC%2B%2B4Oog90srhtR2ahXQxTob%2BbPAu3YhhHlrBhAWpvVC7B6VwaRjZIbGvDyKaAo%2F2Jpv4sE7Ne5MgH0N69Sv%2FKBXE5Iu63bidS9Kobmy0mq34Wn5oabhMXAHMCMvbcvz4CwUsDLuqx%2FvMlGEBt64zZbBorigZUt8iWA2D5YW5%2FO13kyWznfUNTPL1tHFwdCe9cKtwssAGnH4Q1xpjA8QbmmJy5TvQGuT8WVRYIYBE03c88dU9tILUljSuVL08Rp6rQfY0UUUq2uxxNbPkM|ampid%3APL_CLK|clp%3A2047675 Quote Link to comment
320 Newb Posted July 22, 2022 Report Share Posted July 22, 2022 I tried it and couldn't get a tight fit. But I feel like your accel pump might look different than mine did. See how it goes with the double lip and maybe keep that in mind if it doesn't work. 1 Quote Link to comment
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