Go Back   Jeep Garage - Jeep Forum > Jeep Platform Discussion > Grand Cherokee - WJ > Engine Performance/Intake/Exhaust

Join Jeep Garage Today
Reply
 
Thread Tools Display Modes
 
  #13  
Old 10-09-2010, 02:23 PM
Milous's Avatar
Senior Member


 
Join Date: Nov 2009
Location: Nottsure, Wair
Posts: 6,539
Thanks: 36
Thanked 2,305 Times in 963 Posts
Rep Power: 2392930
Milous has a reputation beyond reputeMilous has a reputation beyond reputeMilous has a reputation beyond reputeMilous has a reputation beyond reputeMilous has a reputation beyond reputeMilous has a reputation beyond reputeMilous has a reputation beyond reputeMilous has a reputation beyond reputeMilous has a reputation beyond reputeMilous has a reputation beyond reputeMilous has a reputation beyond repute
Re: non HO to HO swap?

There are 17 differences between the 4.7 and 4.7 HO:

1. Block - Detonation sensor bosses in the valley

2. Camshaft - custom profile lobes (designed for increased performance)

3. Connecting rods - modified, with floating wrist pins (vs pressed-fit pins in standard V8)

4. Crankshaft - forged steel (vs cast iron in standard V8)

5. Crankshaft damper - unique to H.O.

6. Cylinder heads - different shaped combustion chambers (for improved airflow). The letters "H.O." are cast on the front end of the heads.

7. Exhaust tip - chrome (2002 models only, decontented for 2003 models. Available only as a one-piece assembly with muffler)

8. Fuel injectors - higher flow (+3.3 lb/hr)

9. Intake manifold - modified (shorter runners)

10. Intake - low-restriction intake system (different resonator, air filter, air filter hose and housing)

11. Knock sensors - two, stereo

12. Main bearings - tri-metal (vs bi-metal in standard V8, designed specifically for the HO engine)

13. PCM calibration - unique programming

14. Pistons - dome shaped for increased compression ratio

15. Spark plugs - platinum tipped

16. Valves - unique exhaust valves (same lift as standard V8)

17. Valve springs - upgraded valve springs (intake & exhaust. Larger diameter wire and more coils)
__________________

__________________
Reply With Quote
  #14  
Old 10-09-2010, 02:40 PM
Member
My Jeep: 2000 4.7L WJ
 
Join Date: Oct 2010
Location: Huntingdon valley ,pa
Posts: 7
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 1547
badassgc is on a distinguished road
Re: non HO to HO swap?

Thanks .. I am aware of all that info but just need to know about the knock Sen harness..

Quote:
Originally Posted by Milous View Post
There are 17 differences between the 4.7 and 4.7 HO:

1. Block - Detonation sensor bosses in the valley

2. Camshaft - custom profile lobes (designed for increased performance)

3. Connecting rods - modified, with floating wrist pins (vs pressed-fit pins in standard V8)

4. Crankshaft - forged steel (vs cast iron in standard V8)

5. Crankshaft damper - unique to H.O.

6. Cylinder heads - different shaped combustion chambers (for improved airflow). The letters "H.O." are cast on the front end of the heads.

7. Exhaust tip - chrome (2002 models only, decontented for 2003 models. Available only as a one-piece assembly with muffler)

8. Fuel injectors - higher flow (+3.3 lb/hr)

9. Intake manifold - modified (shorter runners)

10. Intake - low-restriction intake system (different resonator, air filter, air filter hose and housing)

11. Knock sensors - two, stereo

12. Main bearings - tri-metal (vs bi-metal in standard V8, designed specifically for the HO engine)

13. PCM calibration - unique programming

14. Pistons - dome shaped for increased compression ratio

15. Spark plugs - platinum tipped

16. Valves - unique exhaust valves (same lift as standard V8)

17. Valve springs - upgraded valve springs (intake & exhaust. Larger diameter wire and more coils)
__________________

__________________
Reply With Quote
  #15  
Old 10-10-2010, 07:25 AM
scjeep4.7HO's Avatar
Senior Member
My Jeep: 2004 4.7 HO WJ
 
Join Date: Jun 2009
Location: Virginia
Posts: 1,518
Thanks: 0
Thanked 5 Times in 5 Posts
Rep Power: 36349
scjeep4.7HO has a reputation beyond reputescjeep4.7HO has a reputation beyond reputescjeep4.7HO has a reputation beyond reputescjeep4.7HO has a reputation beyond reputescjeep4.7HO has a reputation beyond reputescjeep4.7HO has a reputation beyond reputescjeep4.7HO has a reputation beyond reputescjeep4.7HO has a reputation beyond reputescjeep4.7HO has a reputation beyond reputescjeep4.7HO has a reputation beyond reputescjeep4.7HO has a reputation beyond repute
Send a message via MSN to scjeep4.7HO
Re: non HO to HO swap?

I reused my HO knock sensors on from my 4.7HO on the fully bulit NON HO motor in my jeep right now. It still has only one plug but has 2 knock sensors coming out of one plug. Yours only has one plug so it should just plug right in and bolt right in the valley.
__________________

__________________
Supercharged 4.7L HO. If you would like to know more just ask.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
6.1L Swap - Need Some Help! soontobesrt Performance Modifications 46 09-26-2014 10:52 PM
05 to 08 front end swap? DavidESchiller Grand Cherokee - WK 3 09-21-2010 12:04 PM
WJ cooling swap! Unholyskorn86 Engine Performance/Intake/Exhaust 21 03-25-2010 12:10 AM
lift swap help mayor bloom Off Road Modifications 1 03-05-2010 06:46 PM
4.7 to HO swap 024.7HO Engine Performance/Intake/Exhaust 6 02-22-2010 11:49 PM

» Random Garages

Z

simplewon


EtherealPonx
Add your Jeep
Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 02:58 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Copyright 2012 - JeepGarage.Org
The Jeep Grand Cherokee Owners Community

JeepGarage.org is in no way associated with or endorsed by Chrysler Group LLC.