ive heard a few people do it .... and my engine is a good spec and the cam im getting has a power band of 2500rpm-7000rpm so i will set the rev limit for about 7k depnding on what its like when mapped....

and i dont want the same happening

 

Oh mad!!
I spose though for most of us we wont be bouncing off the limiter at 7200rpm so not so much of a problem! My engine stops making power about 6000rpm so my limiter is set at 6700rpm just to give me a little overhead.

 

sounds good mate well my cams power band is to 7000rpm and i hope that i can still be making power around then with the t34 and greys as i would like a quite big power band to make up for the lag

 

You'll be fine with a T34 it will make power late but hold on all day long, mine only runs out of puff so early because if the .36 Ex but it makes full boost by 3k so still a nice power band and very responsive.

 

sounds like a real cracker mate .... im hopeful that its a proper toy when done ...
as i miss being scared by my old mk2 atmo cossie

 

Hi All,

Karlos has it correct. The roller lifter camshaft is ground from a different material - ford ones used pressed lobes on the camshaft central core, and the replacement ones are steel billet machined. The camshaft lobe profile is also ground different for a roller lifter.
The lobe looks much larger than a standard flat lifter profile.

The picture is a 1.9 HO roller lifter camshaft.
These cams will not fit the UK head - the cam bearing journals are all the same size, where the UK heads have different sized journals front to rear. Our 1.9 cams can be removed from the front or rear of the engine.

 

Do you have a photo of whats done to the lifter bore to stop it from spinning round?

 

Normal rockers can snap when used hard. I have snapped 2 rockers in my XR3 over the last 10 years of abuse.

The first was std ERST items. The 2nd was R16i rockers which are different.

I have also seen many many CVH heads pull the stud out of the head, and also pull the nut off the thread if the correct nut is not used.

Roller rockers i make will not snap and have no issues being rev'd past 7500rpm. I use these with solid lifters made by KENT and custom profile cam shafts similar to the CVH35/37. The studnut which holds the rocker on is a custom made item which also helps the rocker stud to have a little more strength.

A little info to help.
Regards
Jano

 

I made one of these cams fit my 1.6 head once by machining the journals down to the correct size and polishing them up. Didnt realise at the time that it would only last five mins because it boxed the springs, and as i now read is also made of a different material lol.

 

what is the difference ?

i was told the RS1600i only have one hole in them but all the rockers ive seen only have one hole so what exactly is it mate ?

 

Do you have any pics of yours Jano, would be nice to see them?
Oooops! lol

 

this is the set up i was saying about and as soon as the next set of rockers are in im putting my deposit down on a complete kit for mine .

 

So are you not going with the Newman cam then, or are you going to use the roller rockers with that?

 

The difference with RS16i lifters is that they lift 1mm higher than std. This has been taken into account with the new ones i will be making.

The roller rockers can be used with any CVH head, any camshaft and lifter combination.


With double or high pressure springs, lightweight caps, solid lifters, decent cam, roller rockers and worked head you would expect the best results and the most reliability for high power, this is what i have on my std 1.6cvh ERST engine and produces 264bhp with green 803injectors at max duty cycle. I will upgrade to light blues / greys at some point for next year. But to be honest i wont be doing it to get more power as i dont think the std pistons and rods will take much more, its purely down to running the injectors at a safe rate.

As for pics of my parts i have never put them on other sites fella for obvious reasons, although there is a pic of the head i had with them fitted floating about a couple of months ago.

Regards
Jano

 

Yes mate of course, ah was that the red ones i've seen on here?
I take it there a pics on your site?

 

its what im thinking to try something different can see what its like ....


and im thinking a group buy with the roller rockers are on the cards .......

 

Yeah why not! lol
Group but on the RR... I might be interested if the price is right, not something I actually need but would look nice when the rocker cover is off!

 

be nice if you get a bigger turbo ..... and thats my thoughts im intrested as i want my engine to rev around 7+k as my t34 wont come in till what 4k lol

 

lol shame we cant have plastic rocker covers would look good.

 

well keep us informed mate

 

Question

Is there a solid roller lifter available to replace the hyd roller lifter?


Thanks
Davegt27

 

cant you just buy an american ho head? job done

 

newman cams run solid lifters but the roller rockers are sepreate and jano is having some made .... get on www.oddkiddcreations.co.uk and ask the man himself

 

Thats what i decided in the end, far easier, roller lifters and rockers, standard, job done. Probably a pain sorting one out though, i used to know a guy who moved to Canada but he's moved back to the UK


Rob,

 

ebay.ca

 

Not a bad plan.....

 

are you saying the American HO head has solid roller lifters?

thanks
Davegt27

 

its ment to but you would need a realy special cam to suit the turbo ....

 

Sure newmans could make a 1 off if u sent them a HO cam

 

true

 

No they are hydraulic roller lifters, why do you want solid lifters out of curiosity?

Rob,

 

It’s a long involved story

And I don’t want to hi-jack the thread

I can PM you an explanation



Regards
David

 

Yea go for it, im quite interested

 

PM sent

Davegt27

 

Thread dredging...

Any more info on this?

I'm about to rebuild my trusty old cvh turbo, and I don't want to run the risk of it eating a camshaft (I reckon it's down to poor oil pressure/bad lubrication.

Anyway, I was thinking of a set of the 1.8 CVH lifters and poss a set of roller rockers (I know they aint really needed but hey ho..) does anyone do a kit for the 1.6 cvh, janno?? prices?

 

Jano may do a roller rocker kit...

For the 1.8 roller lifters you will need to machine the head slightly for lifter retainers (stops the lifters from spinning) and find an appropriate cam, as i don't think the standard lifter cams are appropriate. Newmans may be able to supply a custom grind for this application etc.

And thats about as far as i got before ignoring the problem lol.

another option which i briefly looked into was making up a cam spray bar and tapping into an oil gallery. But decided i didn't fancy scrapping a head finding a suitable gallery and then scrapping my bottom end due to reduced oil pressure another option is an external (possibly electric) oil pump supplying the cam spray bar, i couldn't find a suitable pump as most are either for dry sumps etc and are bloody expensive, more so than a new cam every once and a while.

I don't know if any one has looked at using a zetec oil pump? or if a zetec oil pump has better out put than a cvh....

So currently i have smoothed out and counter sunk the oiling holes for the cam and will see if this helps at all.

Rob,

 

cheers!

I happen to know the oil pressure from a zetec is miles better than the CVH, so one option is a ZVH, I don't know if the zetec oil pump would fit onto a CVH, I wouldn't imagine so but can't say for sure.

So basically it's a bit of money for machining, custom cam and the roller rockers...but no one really knows 100% if it's better/will definately work. hmm.....tempted to just go full zetec but really didn't want to spend a lot of cash as i'd be happy with 200bhp, just don't want to buy cams every month as it's already chewed the original and a piper (albeit 2nd hand but all lifters fitted in correct position, AND it's got lowish oil pressure....)

 

i would by a set if it all cums to light

 

I might re look into it, im not sure if you can get different types if roller lifters, if you can get one with a ball bearing rather than a needle type roller (never seen them ) then you wouldn't need the head machining, for retainers... The retainers stop the lifter spinning.

Im sure the zetec oil pump isn't a direct fit, would love to know if it was possible though. The zetecs better oil pressure could be down to tolerances and design rather than a higher out put pump.

Any ho, should have some time this summer.

Rob,

 

Ball bearing type would be great, but this far down the line I doubt it
Zetec pump will not fit, and as you say it could just be down to tolerances, if you preload the relief spring enough in the CVH pump it will make enough pressure to blow oil out sides of the filter!