UK - Need To Locate 4.7 V8 High Output RH Camshaft - JeepForum.com
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post #1 of 21 Old 06-12-2021, 03:33 AM Thread Starter
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UK - Need To Locate 4.7 V8 High Output RH Camshaft

Hi there

I have a WJ Overland with the V8 High Output engine.

After buying the vehicle, it had a slight misfire so did all the usual with new idle valve, new plugs and cleaned a lot of stuff up.

Unable to cure it I decided to pull the rocker covers to see it if had any historic problems. It was obvious that the rocker cover had been off before. Upon inspection it looks as though in the past, one of the rocker arms had come off causing some minor damage in the head on cylinder 3 on the right hand bank as you look at the engine from the front. Upon examining the camshaft, it had damage across the lobe.

I took the cam to my local automotive precision engineer who told me it was too damaged to repair.

I dont want to scrap the vehicle but with it being the High Output, I'm struggling to find a cam anywhere.

With this in mind, I'm asking the community if they have or know anyone who might have a replacement cam for this engine.

Many thanks if anyone can help

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post #2 of 21 Old 06-12-2021, 03:40 AM Thread Starter
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Hi Again - given the picture, I also wonder if anyone knows of anyone who would suggest it can be repaired and how much. The best way i can described the damage is that the polished coating has come off revealing the material underneath. I'm dont have the knowledge to know whether it is an additional coating or whether its just ripped out part of a polished finish.

I suspect the previous owner knew what they were doing and just put the car back together to sell. I have two V8's (and ironically have a spare camshaft for my other one) and a straight 6 and like my Jeeps, so I'd be gutted to have to scrap this one but at some point its just not economically viable to repair.

Many thanks for any help or advice that you may be able to offer
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post #3 of 21 Old 06-12-2021, 06:37 AM
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You could try these guys - https://www.kentcams.com/support - back in the dim and distant they used to build up cams for various applications. They may be able to help.

Good luck.
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post #4 of 21 Old 06-12-2021, 09:47 AM
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Why not just put the 08-13 camshafts in it? Bolt in upgrade and you can get them new still.
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post #5 of 21 Old 06-12-2021, 02:20 PM
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post #6 of 21 Old 06-13-2021, 08:22 PM
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Quote:
Originally Posted by xcaliber81 View Post
Why not just put the 08-13 camshafts in it? Bolt in upgrade and you can get them new still.
I'd heard something about that - so are the 08-13 camshafts basically the same as the HO ones, or do they make even more power?
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post #7 of 21 Old 06-14-2021, 07:20 AM
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I suspect you misunderstood you local man.

Cam are built up using a spray welder.
The ground to profile on a lathe.

Even DIYers do it.

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post #8 of 21 Old 06-14-2021, 08:51 AM
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Originally Posted by AVR2 View Post
I'd heard something about that - so are the 08-13 camshafts basically the same as the HO ones, or do they make even more power?
I've always thought there was a H.P different in the cams but I just read a thread stating that the cams are the same dispite the 08 having different compression and 16 plugs. I guess the upgrade is with the 08 intake.
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post #9 of 21 Old 06-14-2021, 08:53 AM Thread Starter
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Hampshire WJ - yes thank you for that - Ive had a fair bit of stuff off Kent in the past but I'll have a look at a few options first as they're probably a little big to be messing around with my job.

But greatly appreciate the reply.
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post #10 of 21 Old 06-14-2021, 08:55 AM Thread Starter
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Struggling with the shipping to get stuff to the UK but many thanks for looking - I really appreciate every reply.
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post #11 of 21 Old 06-14-2021, 09:03 AM Thread Starter
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Quote:
Originally Posted by Delta0 View Post
I suspect you misunderstood you local man.

Cam are built up using a spray welder.
The ground to profile on a lathe.

Even DIYers do it.

https://www.youtube.com/watch?v=Er1bB4aWB_U
A little beyond my technical skills I'm afraid, I'm OK with spanners and rachets but thats about it. I'm going to send your clip to a friend of mine to see if its something he'd be able to help with but here in the UK, every machine shop that I've tried have said that they 'don't have the profile for that cam' or, as in the case of the local shop, 'its too damaged to repair.

Its getting to be a bit hard to be honest because I really dont want to have to put a set of standard cams in it and lose 20bhp. I bought this WJ to be my last ever actual off-roader (as opposed to family car etc) on which I wanted to spend some money and have the mods I've always wanted and keep it running as long as I could - didn't think I'd get tripped up this early.

Thanks again for your help
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post #12 of 21 Old 06-14-2021, 09:09 AM Thread Starter
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Originally Posted by xcaliber81 View Post
I've always thought there was a H.P different in the cams but I just read a thread stating that the cams are the same dispite the 08 having different compression and 16 plugs. I guess the upgrade is with the 08 intake.
Thanks for your input - AVR asked all the questions I was about to ask.

So the HO, as I understand, was discontinued in 08. The V8 then became the FFV. Based on your suggestion I've had half an hour having a quick look but i can't find any cams available for anything after 09.

Do you mind me asking where you might have seen the thread as then I might be able to narrow down what I'm looking for, even if I have to order from the US and spend more on shipping than the cams themselves?

Thanks again for your help - its getting desperate
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post #13 of 21 Old 06-14-2021, 09:50 AM
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I think at one time Kent Cams were small enough that they would have built up the old cam with spray weld then ground it to profile using the good lobes as a starting point - I still think they may be able to point you in the right direction. Maybe these guys, as they say they do re-profiling - https://www.chaseengines.co.uk/services/ probably worth a call . Probably companies specialising in historic race cars are a good starting point as quite a bit of their work is restoration of original parts that are cream crackered and they farm a lot of work out to little specialist entities.

In reality the loss of the horsepower is not a real issue off roading, but I think the HO engines make their torque lower down which may be more of an issue. Rockauto has standard cams at 55 plus shipping.
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post #14 of 21 Old 06-14-2021, 10:04 AM
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Quote:
Originally Posted by HampshireWJ View Post
I think at one time Kent Cams were small enough that they would have built up the old cam with spray weld then ground it to profile using the good lobes as a starting point - I still think they may be able to point you in the right direction. Maybe these guys, as they say they do re-profiling - https://www.chaseengines.co.uk/services/ probably worth a call . Probably companies specialising in historic race cars are a good starting point as quite a bit of their work is restoration of original parts that are cream crackered and they farm a lot of work out to little specialist entities.

In reality the loss of the horsepower is not a real issue off roading, but I think the HO engines make their torque lower down which may be more of an issue. Rockauto has standard cams at 55 plus shipping.
Plus VAT
Plus when I bought 2 PCV valves from them, they sent them separately.
So I had to for our for 2 lots of post.
Plus 2 lots of VAT on that post.
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post #15 of 21 Old 06-14-2021, 10:17 AM
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Pretty obviously there is shipping and tax when buying from Rockauto, but if you buy sensibly you only pay one shipping cost and paying the tax with your order you don't have that problem.
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