Go Back  Offshoreonly.com > Technical > General Q & A
SBC Built, now looking for jet recommendations >

SBC Built, now looking for jet recommendations

Notices

SBC Built, now looking for jet recommendations

Old 09-30-2014, 12:36 PM
  #11  
Registered
Thread Starter
 
Join Date: Apr 2013
Posts: 30
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by Baja Rooster
Do you have a provision on your exhaust for an o2 sensor to use an AF gauge? It's the only way to tune a carb these days. Many manufacturers are making adaptor plates to use sensor in their exhaust.



Does anyone have any experience with a D.U.I. Distributor? One came on my boat and I'm wondering if it's a weak link.
Nowhere to put the o2 sensor that it wouldnt get wet. And i dont have one anyway
steves86ta is offline  
Old 09-30-2014, 03:07 PM
  #12  
Registered
 
Join Date: Jun 2011
Posts: 1,164
Received 110 Likes on 82 Posts
Default

Originally Posted by steves86ta
Nowhere to put the o2 sensor that it wouldnt get wet. And i dont have one anyway
If you have the Merc dry joint exhaust you put an O2 spacer between the manifold and riser. O2 sensor is in the dry section of exhaust at this point. Lots of folks do it. You will be asking yourself why you didn't do it earlier once you can monitor real time AFRs. No guess work if its ignition or fuel related when you run into problems. No plug reading BS etc.
Trash is offline  
Old 09-30-2014, 03:20 PM
  #13  
Registered
Thread Starter
 
Join Date: Apr 2013
Posts: 30
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by Trash
If you have the Merc dry joint exhaust you put an O2 spacer between the manifold and riser. O2 sensor is in the dry section of exhaust at this point. Lots of folks do it. You will be asking yourself why you didn't do it earlier once you can monitor real time AFRs. No guess work if its ignition or fuel related when you run into problems. No plug reading BS etc.
any link for this spacer?
steves86ta is offline  
Old 09-30-2014, 05:27 PM
  #14  
SB
Registered
iTrader: (1)
 
Join Date: Nov 2004
Location: On A Dirt Floor
Posts: 13,520
Received 3,090 Likes on 1,392 Posts
Default

Originally Posted by steves86ta
its the edelbrock 2116 intake. Setup for both spread and square bores

Yup, and you need the sealing plate for the squarebore (Holley) carbs. 100% fact. Or vacuum leaks will plague you.

You can also use the Holley Plate that also holds the Throttle Morse cable too as an added bonus if you don't have your cables set up to your carb yet.

Edelbrock #2732


Holley with Morse cable attachment set up
SB is offline  
Old 09-30-2014, 05:31 PM
  #15  
SB
Registered
iTrader: (1)
 
Join Date: Nov 2004
Location: On A Dirt Floor
Posts: 13,520
Received 3,090 Likes on 1,392 Posts
Default

BTW: if you get the plate from Edelbrock, the gaskets are paper. They suk.

I use a open spreadbore gasket under plate, and open squarebore gasket on top of plate.

Mr gasket's gaskets are decent and cheap.

Too funny: I just opened my carb base gasket bin and guess what was at the bottom. The Edelbrock sealing plate. LOL.
SB is offline  
Old 09-30-2014, 06:44 PM
  #16  
Registered
 
Join Date: Jun 2011
Posts: 1,164
Received 110 Likes on 82 Posts
Default

Originally Posted by steves86ta
any link for this spacer?
Wags Engineering http://wagsengineering.com/products/...sensor-spacer/

or

Dennis Moore's http://www.ebay.com/itm/OXYGEN-SENSO...-/310137061646

I have both, either will work. Wags has a nicer finish but not passages around the sensor so water can pool on the top side of the elbow. I currently run Dennis Moore's spacer. There are good pictures of the installation on his eBay page.

I also run the MTX-L wideband shown.

As a technique I also drain the manifolds at the end of the day.

Last edited by Trash; 09-30-2014 at 06:47 PM.
Trash is offline  
Old 09-30-2014, 06:46 PM
  #17  
Registered
Thread Starter
 
Join Date: Apr 2013
Posts: 30
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by SB
Yup, and you need the sealing plate for the squarebore (Holley) carbs. 100% fact. Or vacuum leaks will plague you.

You can also use the Holley Plate that also holds the Throttle Morse cable too as an added bonus if you don't have your cables set up to your carb yet.

Edelbrock #2732


Holley with Morse cable attachment set up
Well im in luck. I am using the Holley plate to mount my throttle cable. :-) Looks liek thats not it

Im also using Mr Gasket carb gaskets. Both ontop of the plate and on bottom
steves86ta is offline  
Old 09-30-2014, 06:52 PM
  #18  
Registered
Thread Starter
 
Join Date: Apr 2013
Posts: 30
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by Trash
Wags Engineering http://wagsengineering.com/products/...sensor-spacer/

or

Dennis Moore's http://www.ebay.com/itm/OXYGEN-SENSO...-/310137061646

I have both, either will work. Wags has a nicer finish but not passages around the sensor so water can pool on the top side of the elbow. I currently run Dennis Moore's spacer. There are good pictures of the installation on his eBay page.

I also run the MTX-L wideband shown.

As a technique I also drain the manifolds at the end of the day.
neither of those will work for me. My manifolds are shaped different.

like this: (top of picture)
steves86ta is offline  
Old 09-30-2014, 07:58 PM
  #19  
SB
Registered
iTrader: (1)
 
Join Date: Nov 2004
Location: On A Dirt Floor
Posts: 13,520
Received 3,090 Likes on 1,392 Posts
Default

Have you taken out plugs to see if wet from water ? Or removed a manifold to see if water is being pulled back in /

I have 0 experience with that exhaust set up.

BTW: I absolutely dispise cheap EBAY chinese ignition components, as you know, and you are changing.. Not a big fan of MSD stuff Marine, but that's a dependability thing many run into some years down the road. Some don't.

Last edited by SB; 09-30-2014 at 08:00 PM.
SB is offline  
Old 09-30-2014, 11:51 PM
  #20  
Registered
 
Join Date: Jun 2011
Posts: 1,164
Received 110 Likes on 82 Posts
Default

Originally Posted by steves86ta
neither of those will work for me. My manifolds are shaped different.

like this: (top of picture)
If the bolt spacing is the same the spacers will work. You don't need water flowing through them in your case.
Trash is offline  

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.