Slant *        6        Forum
Home Home Home
The Place to Go for Slant Six Info!
Click here to help support the Slant Six Forum upgrade!
It is currently Sun Jul 22, 2018 8:52 pm

All times are UTC-07:00




Post new topic  Reply to topic  [ 2 posts ] 
Author Message
PostPosted: Sun Jul 23, 2017 8:05 am 
Offline
3 Deuce Webber

Joined: Mon Sep 07, 2015 12:31 pm
Posts: 56
Location: Sk, Canada
Car Model*:
Hey, I've been actively tuning my car this summer and I seem to have run into the issue of running lean in 3rd gear.

Here is my setup.
I have the PV referenced from the exhaust side, tapped into the manifold, with a 1/8" line to the carb. with a 6.5 spring I THINK...

Boost is 5psi at the manifold and 7-10 at the hat (based off my fuel pressure as its referenced from there to my regulator)


When in 1st and 2nd it pulls hard and i get around 9 or 10:1 AFR but when 3rd hits its at 13-14AFR and pings so i back out, BUT only sometimes will it stay at 9-10:1 in 3rd and it pulls HARD!

SO my thinking is that its sticking or that the pressure is not as high in 3rd?? Should I run maybe a larger line?

Anyone else run into this issue? Its weird that its ALWAYS 3rd gear and never 1st or 2nd.

_________________
1967 Dodge Dart GT Convertible, Slant Six. (Currently in Turbo build)
1972 Dodge Demon 340 4 spd
1978 D100 (To be 5.7 Hemi Swap)
1969 Plymouth Barracuda Convertible 340 4spd. (In restore mode)


Top
   
 Post subject:
PostPosted: Wed Jul 26, 2017 10:43 am 
Offline
3 Deuce Webber

Joined: Mon Sep 07, 2015 12:31 pm
Posts: 56
Location: Sk, Canada
Car Model*:
Think I found the answer, at least its working now.

oddly, but most likely not oddly... Timing.

I dialed in my initial timing better, as I was having issues with it misfiring before... ended up being the pertronix.
The pickup was touching the plastic piece that has the magnets.

Solved the misfire, and then getting timing right, she pulls hard through all gears and AFR is the same in all gears.

_________________
1967 Dodge Dart GT Convertible, Slant Six. (Currently in Turbo build)

1972 Dodge Demon 340 4 spd

1978 D100 (To be 5.7 Hemi Swap)

1969 Plymouth Barracuda Convertible 340 4spd. (In restore mode)


Top
   
Display posts from previous:  Sort by  
Post new topic  Reply to topic  [ 2 posts ] 

All times are UTC-07:00


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Limited