Rochester E2SE and 2SE carb jet question - S-10 Forum
 
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post #1 of 9 Old 10-09-2014, 06:23 PM Thread Starter
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Rochester E2SE and 2SE carb jet question

Hey Folks,
I am about to rebuild the carb on my s10. It has the 2SE Rochester carb. I was looking to see what I could find for jets, just in case I needed to re-jet it. I found this variable jet that appears to be for this carb.

http://www.carburetion.com/Products/...px?part=R151-2


Anyone here use or care to comment on this variable jet for this carb????

thanks!!
mark


85 S10 Durango 2.8L extcab rwd 36k actual miles.
"true wisdom is knowing you know nothing" Paraphrased from Socrates
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post #2 of 9 Old 10-10-2014, 09:06 AM
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Re: Rochester E2SE and 2SE carb jet question

Last time I messed with one of these carbs, it sucked.
I installed a set of headers on an old jeep with a 2.5, and it wouldn't run properly after the install. The damn thing was so lean, it barely had any power.
I had to drill the jets out to huge holes.
The secondary barrel has a trap door that opens and it controls the secondary fuel jet - opening the needle in the jet orfice more as the door drops open. I had to hog the BAG out of that jet. I did finally get it right after removing and replacing the carb several times.
For the amount of skrewing around I had to do, I should of just bought the Weber conversion.

As usual, I always recommend the Weber conversion. I don't know of anyone who has not been very happy with it.

Sorry, I know it's not what you want to hear, but you will see that rebuilding your carb is going to be a PIA.

S10 addiction:
1)'82 S10, 383, 700R4, Shorty
2) '85 S10, 3.4, 700R4 4x4 stretch cab (Redneck)
3) '90 S10 2.5, 5 speed shorty
4) '91 S10, Built 3.4, 5 speed shorty (Voodoo)
5) '92 S10, 2.5, 5 speed shorty, (Barbie)
6) '92 S10, 2.5 5 speed, Shorty
7) 1979 LUV, Buick 3.8 V6, TH 350 Shorty.
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post #3 of 9 Old 10-10-2014, 09:51 AM
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Re: Rochester E2SE and 2SE carb jet question

Joed could help you but I don't know if he comes on anymore.

1985 2.8L V6 S10 completely restored with 65,000 miles on body, frame, and rear axle. Weber 38 DGES Powered SOLD

1989 Nissan D21 Z24i 8 Wire Wonder

1995 Chevy S10 ext cab 4.3 Z 40,000 Miles On Rebuild.
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post #4 of 9 Old 10-10-2014, 05:37 PM Thread Starter
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Re: Rochester E2SE and 2SE carb jet question

Quote:
Originally Posted by greasemonkeys10 View Post
Joed could help you but I don't know if he comes on anymore.
I'll see if I can pm or email him.
thanks

85 S10 Durango 2.8L extcab rwd 36k actual miles.
"true wisdom is knowing you know nothing" Paraphrased from Socrates
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post #5 of 9 Old 10-15-2014, 01:56 PM
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Re: Rochester E2SE and 2SE carb jet question

I haven't seen Joed in a LOOOONG time. I'm guessing he sold his truck. He's really knowledgeable on those old Rochesters. I don't personally care for em myself. Joe and I used to banter back and forth on that one for sure!

I'd take Max's advice and either go Weber, which is basically an easy bolt on, or go for the Edelbrock intake and Holley combo which is only a little more work. I just so happen to have one of the latter setups if you're interested....



1984 xcab s-10 3.4L GM crate engine 91 S10 TBI swap w bored intake, Edelbrock headers. 2" Rough Country Lift. Custom exhaust, shift kit, e-fan.


EFI swap https://www.s10forum.com/forum/f106/...e-help-513616/

My build thread (3.4L)https://www.s10forum.com/forum/f106/...stions-427168/
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I had to cut my nut in half .
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post #6 of 9 Old 10-15-2014, 09:49 PM Thread Starter
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Re: Rochester E2SE and 2SE carb jet question

I would gladly go with the weber, my only concern is will it provide the needed vacuum ports/connections to still allow my emissions controls to work.

I have been checking with the Colorado DOT on this stuff, they are plain nasty about any help or suggestions. Simply put, it must pass emissions with ALL of its original equipment.

I bought a rebuild kit to try and rebuild the Rochester. It was about $30. If it does not work, then I'll go further with a weber.
I did pm Joed, no response so he must be on hiatus.

85 S10 Durango 2.8L extcab rwd 36k actual miles.
"true wisdom is knowing you know nothing" Paraphrased from Socrates
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post #7 of 9 Old 10-15-2014, 10:19 PM
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Re: Rochester E2SE and 2SE carb jet question

Not sure if it will pass emissions but the weber has a pcv port, float bowl vent, and 1 vacuum line which could be tied into the evap system and egr with a correct routing. However I'm not sure the 38mm dges could pass as it uses more fuel than the 36/32. You could trying filling the gas tank with a ton of heet and seafoam to pass the sniffer. My grandfather has done that before.

1985 2.8L V6 S10 completely restored with 65,000 miles on body, frame, and rear axle. Weber 38 DGES Powered SOLD

1989 Nissan D21 Z24i 8 Wire Wonder

1995 Chevy S10 ext cab 4.3 Z 40,000 Miles On Rebuild.
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post #8 of 9 Old 10-16-2014, 09:54 AM
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Re: Rochester E2SE and 2SE carb jet question

Cricket, when was the last time you went for inspection?
I have been to alot of different states, of course each one is different, but many of them don't look very closely at older vehicles, and most states exempt any vehicle earlier than 1996 (pre OBD II).

I know that Cali has Nazis doing inspections - since the smog there is crazy... I remember driving into the SF valley from Simi and seeing wild colored smog - as in PURPLE, YELLOW and GREEN!!!!!. WTF. Totally unnatural.

The CMV has to quote their policy over the phone. Only stock parts.

I would suggest that you find an inspection station and ask them how lenient they are. I bet they will tell you better than the Aholes at the MV joint.

In Massachusetts, you can apply for an exemption for older vehicles.

S10 addiction:
1)'82 S10, 383, 700R4, Shorty
2) '85 S10, 3.4, 700R4 4x4 stretch cab (Redneck)
3) '90 S10 2.5, 5 speed shorty
4) '91 S10, Built 3.4, 5 speed shorty (Voodoo)
5) '92 S10, 2.5, 5 speed shorty, (Barbie)
6) '92 S10, 2.5 5 speed, Shorty
7) 1979 LUV, Buick 3.8 V6, TH 350 Shorty.
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post #9 of 9 Old 10-16-2014, 08:50 PM Thread Starter
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Re: Rochester E2SE and 2SE carb jet question

MadMax
In Colorado vehicles 1975 and older are exempt. Vehicles that are 32 years old but newer than 1975 can do what is called the two speed idle test with no visual inspection. These vehicles can also apply for collector plates. Vehicles that are new than 32 years old must under go a full emissions test which includes an inspection. Our emission inspections are run by the state. They are not independent stations. They are pretty thorough. I have four other cars, so I get to the inspection stations at least once a year.

Also, all vehicles older than 7 years(IIRC) are required to get an emissions every two years. I think new vehicles now are allowed 4 years before they need an emissions.

All that being said, Colorado does have provision for "custom", kit, and home built cars that allows them to be "emission test free".

I tried to get a definitive answer on what "custom" means. I got a whole bunch of BS. No clear answer or definition exist that I could find. I figure, if I wait until January to get my e-test, it will be good for 2 years and expire in 2017. My truck will then be 32 years old and the next e-test gets much more lenient. I only need to get through this e-test in January and then I can modify a bit without so much worry.

thanks for the thoughts and suggestions too.
mark

85 S10 Durango 2.8L extcab rwd 36k actual miles.
"true wisdom is knowing you know nothing" Paraphrased from Socrates
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