 Carb jets frozen on their bores |
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| Scott S |
 Dec 22 2009, 10:19 AM
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#1
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Small Member  Group: Members Posts: 1,698 Joined: 30-April 03 From: Colorado Member No.: 633  |
Hi All –
. I have a 2.7 that will be running carbs (40IDTP). They were fully gone through, the shafts are great, and they are very very clean. Last night I was going through parts and decided to pull the air/emulsion tubes just to see what they had in them (the carbs came from sea level and I am in Colorado – around 6200 feet). It was everything I could do to get the jet to turn/unscrew in the bore – I could not believe how stuck they were. I didn’t even attempt to do the second carb – just sprayed the thing with carb cleaner and let it set over night. Is this normal? Once they broke free, they were very easy to turn and the emulsion tubes came right out – unfortunately the top of the brass jet where the screw driver rests is now gnarled. I have a modified screw driver that is the correct thickness for the slot in the jet, and that was ground on the sides to fit into the bore on the carb. Being that I am sure there will be some trial and error in getting this motor jetted correctly, is there a way to prevent this in the future? On my current -4 motor I am running dual 40’s and have never had this happen in 10 years – every thing comes a part very cleanly (the car only has 10k miles on a 1996 rebuild however…) Thanks for any help! (IMG:style_emoticons/default/santa_smiley.gif) Scott S |
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| brant |
Dec 22 2009, 12:55 PM
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914 Wizard Group: Members Posts: 12,022 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains 
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Scott,
it probably won't happen again I'm guessing its bi-metal type corrosion or varnished fuel but you should be fine now what jets did you find in there? |
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| Scott S |
Dec 22 2009, 01:01 PM
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#3
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Small Member Group: Members Posts: 1,698 Joined: 30-April 03 From: Colorado Member No.: 633 |
QUOTE(brant @ Dec 22 2009, 11:55 AM)  Scott, it probably won't happen again I'm guessing its bi-metal type corrosion or varnished fuel but you should be fine now what jets did you find in there? Hi Brant! The emusion tubes are F1's and I think the airs are 170's? It's hard to tell with the gnarled tops. It appears there are no main jets installed. What are you running on your race car at our altitude? Is it weird that I enjoy looking at these things so much? Those three dirty gold velocity stacks get me all twitterpated.... (IMG:style_emoticons/default/biggrin.gif) |
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| brant |
Dec 22 2009, 01:08 PM
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#4
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914 Wizard Group: Members Posts: 12,022 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains
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QUOTE(Scott Schroeder @ Dec 22 2009, 12:01 PM) Hi Brant! The emusion tubes are F1's and I think the airs are 170's? It's hard to tell with the gnarled tops. It appears there are no main jets installed. What are you running on your race car at our altitude? Is it weird that I enjoy looking at these things so much? Those three dirty gold velocity stacks get me all twitterpated.... (IMG:style_emoticons/default/biggrin.gif) My jets will be way way off for you the race car won't run below 5grand, but we gear it to work that way I'm running about 160 mains, with another 50count of added 2ndary enrichment so way way way large... but your motor is big so there should be lots and lots of 2.7 advice out there ask greg, what eurosport put into his 2.7 for jetting also ask lars what he is using for a 2.7 in boulder (also a lot of pelican knowledge out there too) brant |
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Posts in this topic
Scott Schroeder Carb jets frozen on their bores Dec 22 2009, 10:19 AM
McMark That happens when carbs are left sitting for a lon... Dec 22 2009, 10:22 AM r_towle Dunk them in Carb cleaner overnight.
Rich Dec 22 2009, 12:40 PM
r_towle
Scott,
it probably won't happen again
I... Dec 22 2009, 01:53 PM Scott Schroeder
[quote name='Scott Schroeder' post='1253996' date... Dec 22 2009, 04:49 PM Vacca Rabite The IDFs thta I tore apart were the same way. Lot... Dec 22 2009, 01:36 PM ME733 :popcorn: CAUTION!!! if it,s clean qu... Dec 22 2009, 04:23 PM Gint D'oh! Sorry Scotty. Everything working o... Dec 22 2009, 05:58 PM Scott Schroeder Hi Mr Gint!
I wont know if all is well until w... Dec 23 2009, 10:11 AM Gint I got my last few studs from Raby. Dec 23 2009, 10:15 AM |
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