throttle body spacers

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Aug 15, 2008 | 01:40 PM

#31

finneys98xj

CF Veteran

Joined: May 2008

Posts: 2,680

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From: Virginia

Year: 1993

Model: Cherokee

Engine: 4.0L

On topic of throdle bodys How do they effect your MPG. Good or Bad.

Aug 15, 2008 | 02:04 PM

#32

Belto

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Joined: Jan 2008

Posts: 1,504

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From: Puerto Rico

mine has help a lil, about .5 to 1 MPG

Aug 15, 2008 | 03:33 PM

#33

Phil99

Thread Starter

Seasoned Member

Joined: Aug 2008

Posts: 400

Likes: 1

From: Minnesota

Year: 1999

Model: Cherokee

Engine: 4.0L

High output

Do they make HO's for the newer style of cherokee (97-01) iv never heard of any cherokees in that era with an HO??

Aug 15, 2008 | 04:12 PM

#34

89xjgrey

Empire Offroad

Joined: May 2008

Posts: 120

Likes: 0

From: Gahanna, OH

Year: 1999

Model: Cherokee

Engine: 4.0 HO

They are all considered an 'HO'... :-) They rose after the Renix era...

Aug 15, 2008 | 04:25 PM

#35

prerunner1982

CF Veteran

Joined: May 2008

Posts: 2,495

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From: Edmond, OK

Year: 1993

Model: Cherokee

Engine: 4.0 ltr

Quote:

Originally Posted by okcjeeper

I got a question...what's a helix and swivel spacer? I don't plan on getting one just curious how they are different then standard tb spacers..

Standard TB spacers are smooth on the sides of the plenum.. the helix/swirl type have grooves cut into the sides of the plenum to increase the air velocity supposedly atomizing the air and fuel. HOWEVER, since our engines are not throttle body injected the helix spacer probably wouldnt make much of a difference.

Aug 15, 2008 | 04:26 PM

#36

Phil99

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Seasoned Member

Joined: Aug 2008

Posts: 400

Likes: 1

From: Minnesota

Year: 1999

Model: Cherokee

Engine: 4.0L

So for example a 95' 4L. with an HO is the same as just a 99' 4L.?

Aug 15, 2008 | 04:28 PM

#37

prerunner1982

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Joined: May 2008

Posts: 2,495

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From: Edmond, OK

Year: 1993

Model: Cherokee

Engine: 4.0 ltr

For the most part yes.. some of the sensors changed over the years.. In 2000 I believe the heads may have changed some, and in 2001 they went to a distributorless ignition system.