Intake choice

[achris]

Where do I find the numbers on the carb to order the right kit?

What's the model, year and serial number of your engine?

 

[Lou C]

Look on the side the marine units often start with a 17

 

[ericcarr]

Would it be this tag?

 

[Lou C]

that's a Merc number, if you used a Merc rebuild kit that # should work...
look at this pic, the original Rochester carb # is circled in white....
having the original Rochester # enables you to get a better kit from Cliff's.

 

[achris]

Would it be this tag?

Here's the listing from the Merc manual for that carb. It includes the Rochester number.



Chris.......

 

[ericcarr]

OK here’s the picture I just took

 

[ericcarr]

Also will it hurt anything if I just leave the old stove choke right where it is & convert it over to electric?

 

[Lou C]

Based on the kit I have I think you have to remove it because the bracket for the conversion fits where the spring used to be; at least it does on the small block. You have a big block so your need to go research that

 

[Scott06]

Also will it hurt anything if I just leave the old stove choke right where it is & convert it over to electric?

Get something like this to cover the hole

Holley 301-20: Intake Manifold Choke Kit Choke Block-Off Plate - JEGS

Choke Block Off Pad for some SB-Chevy Engine Intake Manifolds

www.jegs.com

divorced choke block off plate, not 100% sure the link is the one you need but you get the idea.

 

[ericcarr]

Based on the kit I have I think you have to remove it because the bracket for the conversion fits where the spring used to be; at least it does on the small block. You have a big block so your need to go research that

That might be in issue…the Philips screw retaining it is pretty stripped out…

 

[todhunter]

This was a pretty good thread on rebuilding a qjet:

Rochester Quadrajet Rebuild and Adjustments

Figured I’d start a thread to list some of the adjustments I’ll try and information I find to properly tune a Q-jet 4 bbl carb for my 4.3L LX in my 1990 2000SL Sport Chaparral. I bought this remanufactured carburetor from National Carburetor. The original that came on this engine was so...

forums.iboats.com