Bored out TB, throttle plate options?
Thread Starter
Senior Member
Joined: Oct 2011
Posts: 731
Likes: 0
From: St. Albert
Year: 1989
Model: Cherokee
Engine: 4.0L I6
I've bored out my HO throttle body to 63mm, and I'm evaluating my options for getting a correctly sized throttle plate.
Junkyard: Has anyone found a throttle plate (larger than 64mm) with a similar plate thickness and screw spacing to a stock XJ one that I could turn down to the correct size?
Other than starting with blank piece of some sort and building one from scratch, or looking online, has anyone had success with other options?
FWIW, I used a milling machine for boring the TB, and have a lathe at my disposal for the throttle plate.
Junkyard: Has anyone found a throttle plate (larger than 64mm) with a similar plate thickness and screw spacing to a stock XJ one that I could turn down to the correct size?
Other than starting with blank piece of some sort and building one from scratch, or looking online, has anyone had success with other options?
FWIW, I used a milling machine for boring the TB, and have a lathe at my disposal for the throttle plate.
Senior Member
Joined: Nov 2013
Posts: 616
Likes: 4
From: Vernon NJ
Year: 1998
Model: Cherokee
Engine: 4.0
When I bored out my throttle body I was able to reuse my stock plate. I only went to about 61mm. The IAC was able to compensate, and I have not had any problems at all.
Thread Starter
Senior Member
Joined: Oct 2011
Posts: 731
Likes: 0
From: St. Albert
Year: 1989
Model: Cherokee
Engine: 4.0L I6
I ended up taking the whole taper out, plus an extra 2mm all the way through, which is why the stock plate won't be an option at all anymore, she's a very loose fit now.
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,579
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Thread Starter
Senior Member
Joined: Oct 2011
Posts: 731
Likes: 0
From: St. Albert
Year: 1989
Model: Cherokee
Engine: 4.0L I6
I would have just gotten the strokedjeep.com part but exchange rate+shipping+returning the core from Canada would make the value take a bit of a dive I'd imagine.
Thread
Thread Starter
Forum
Replies
Last Post
FS[MidWest]: Bored and blasted Throttle Bodies
jhc7399
Engines/Tranny/T-Case
19
Nov 7, 2016 07:15 PM
70hemicuda
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
3
Apr 23, 2016 08:24 PM
dakinejb
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
7
Apr 14, 2016 04:20 PM
Rainycity
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
24
May 4, 2008 03:34 PM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)



