1.6 Roller Rockers?
02-04-2016, 12:58 PM
#1
CF Veteran
Thread Starter
Join Date: Apr 2008
Location: Burlington, NC
Posts: 2,340
Likes: 0
Received 8 Likes
on
8 Posts
Year: 1994...mostly...
Model: Cherokee (XJ)
Engine: 4.0L I6 HO, Lot's of Bolt Ons
1.6 Roller Rockers?
So I have to pull the head on my Jeep to extract a broken exhaust stud...
Figure its a good time to give the head a once over:
1) Magnaflux the Head
2) Have the Valve Seats Cleaned
3) Have the Head Resurfaced taking off as little as possible
4) New Head Gasket of course
5) Check and reuse original springs and push rods if ok.
So the questions is, would it be worth it for me to also put $400 into a set of Harland Sharp Roller Rockers?
Current Engine Bolt on Mods:
CAI, 60mm TB, 1" 60MM Bored TB Spacer, 99+ Intake, APN Style Header, 2.5" Cat Back Exhuast, 703 Injectors, 40 PSI Idle / 49PSI WOT Regulator, MSD Coil, DUI CAP & Rotor, 8.2mm Wires...
Figure its a good time to give the head a once over:
1) Magnaflux the Head
2) Have the Valve Seats Cleaned
3) Have the Head Resurfaced taking off as little as possible
4) New Head Gasket of course
5) Check and reuse original springs and push rods if ok.
So the questions is, would it be worth it for me to also put $400 into a set of Harland Sharp Roller Rockers?
Current Engine Bolt on Mods:
CAI, 60mm TB, 1" 60MM Bored TB Spacer, 99+ Intake, APN Style Header, 2.5" Cat Back Exhuast, 703 Injectors, 40 PSI Idle / 49PSI WOT Regulator, MSD Coil, DUI CAP & Rotor, 8.2mm Wires...
02-04-2016, 01:13 PM
#2
Seasoned Member
Join Date: Dec 2013
Location: Eastern Michigan
Posts: 320
Likes: 0
Received 0 Likes
on
0 Posts
Year: 2001
Model: Cherokee
Engine: 4.0
At that point, I'd just get a clearwater head and avoid all the work/other costs. You're looking at a couple hundred at least for that work. Might as well upgrade.
02-04-2016, 04:49 PM
#4
CF Veteran
Thread Starter
Join Date: Apr 2008
Location: Burlington, NC
Posts: 2,340
Likes: 0
Received 8 Likes
on
8 Posts
Year: 1994...mostly...
Model: Cherokee (XJ)
Engine: 4.0L I6 HO, Lot's of Bolt Ons
So the idea being that the extra money spent on roller rockers
Would be better spent on just a fully rebuilt head?
Would be better spent on just a fully rebuilt head?
02-04-2016, 08:55 PM
#7
CF Veteran
Thread Starter
Join Date: Apr 2008
Location: Burlington, NC
Posts: 2,340
Likes: 0
Received 8 Likes
on
8 Posts
Year: 1994...mostly...
Model: Cherokee (XJ)
Engine: 4.0L I6 HO, Lot's of Bolt Ons
I appreciate opinions on what to replace my head with however, I'm just interested in knowing if rocker rollers are worth a $400 upgrade given my current list of engine mods.
Thanks!
Trending Topics
02-05-2016, 04:58 AM
#11
CF Veteran
Join Date: Dec 2011
Location: PA KOTUFU!
Posts: 1,777
Likes: 0
Received 16 Likes
on
15 Posts
Year: 1998
Engine: 4.0L 162,000
Definitely worth it. Quieter, smoother, etc.
Be careful of taking advice from someone who has not used them on a 4.0L.
Better yet is get a set of 1.7 and you will pick up more performance and it will have power to 4800rpm instead of wheezing out at 4000rpm. No need for a bigger cam and it's problems when using the 1.7s and they will work with stock valve springs.
Bigger cam needs different valve springs, new lifters, new pushrods.
Be careful of taking advice from someone who has not used them on a 4.0L.
Better yet is get a set of 1.7 and you will pick up more performance and it will have power to 4800rpm instead of wheezing out at 4000rpm. No need for a bigger cam and it's problems when using the 1.7s and they will work with stock valve springs.
Bigger cam needs different valve springs, new lifters, new pushrods.
02-05-2016, 05:41 AM
#12
CF Veteran
Thread Starter
Join Date: Apr 2008
Location: Burlington, NC
Posts: 2,340
Likes: 0
Received 8 Likes
on
8 Posts
Year: 1994...mostly...
Model: Cherokee (XJ)
Engine: 4.0L I6 HO, Lot's of Bolt Ons
Thanks guys, sounds like 1.6 is just to smooth it out. No real gains just a better running motor and longer life.
I'll keep my eyes out for 1.7s, sounds like their worth the little bit of extra cash it takes to find them / have them made.
I'll keep my eyes out for 1.7s, sounds like their worth the little bit of extra cash it takes to find them / have them made.
02-05-2016, 12:06 PM
#13
CF Veteran
Join Date: Jul 2013
Location: Monett, MO.
Posts: 7,554
Likes: 0
Received 14 Likes
on
14 Posts
Year: 1999
Model: Cherokee
Engine: 4.0
Definitely worth it. Quieter, smoother, etc.
Be careful of taking advice from someone who has not used them on a 4.0L.
Better yet is get a set of 1.7 and you will pick up more performance and it will have power to 4800rpm instead of wheezing out at 4000rpm. No need for a bigger cam and it's problems when using the 1.7s and they will work with stock valve springs.
Bigger cam needs different valve springs, new lifters, new pushrods.
Be careful of taking advice from someone who has not used them on a 4.0L.
Better yet is get a set of 1.7 and you will pick up more performance and it will have power to 4800rpm instead of wheezing out at 4000rpm. No need for a bigger cam and it's problems when using the 1.7s and they will work with stock valve springs.
Bigger cam needs different valve springs, new lifters, new pushrods.
If the 1.6's did that hell it wouldn't even sound like a 4.0 lol.
Thread
Thread Starter
Forum
Replies
Last Post
granduser
Stock Grand Cherokee Tech. All ZJ/WJ/WK Non-modified/stock questions go here!
5
03-16-2016 12:54 AM
midtiger
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
2
01-19-2016 06:50 AM
shopjeepparts
Vendor Showcase
0
01-16-2016 01:12 PM
toddpetrucci32
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
1
01-06-2016 01:10 PM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)