javierant3

Hello, 6 months ago I installed a newman phase 1 cam with their new hydraulic lifters. The problem is that the lifters are noisy and it seems my engine don`t like to rev.

Currently I have twin 40 DCOE with facet silver top 200hp pump, slightly worked head, and the engine will go up to 4000-4500rpm without much problem, but getting it to 5000 or even 5500 is very difficult. Something curious is that the engine fails sometimes and at 5000rpm it will lose quite power, even the sound of the engine changes.

Can this be the lifters? I think for the CVH the best now is mechanical lifters. I have checked all the engine and everything is fine. I have ngk iridium spark plugs.

This problem is drviving me crazy , as I suppose with that spec , my engine will go to 6000rpm without problem.

B16CVH

https://passionford.com/forum/ford-escort-rs-turbo/267149-newman-cams-how-many-have-used-their-new-cvh-hydraulic-lifter-cams.html

escort4x4

get solid lifters mate, may solve the problem

javierant3

Thanks for the responses, I am thinking to get the solid ones, but I`m afraid because they are more difficult to adjust, but if the problem persists , I get a set of them.

B16CVH

If you do, make sure you have a got a spare two hours to set them, they are a real pain in the arse!

series1john

Yes as said they are a pain to set up but well worth it

javierant3

I have hydro followers so I can set up the mechanic ones and then mount into my head.
Can someone explain the proccess for setting up them?
Are they adjusted outside the head?

Again thanks for the info. I live in Spain and here there is very little or nothing information about tuning CVH engines.

B16CVH

[quote=javierant3;3742208]
Can someone explain the proccess for setting up them?
Are they adjusted outside the head?quote]

When you buy these lifters they just arrive put together and set to a "nothing setting"
You then have to one-by-one put it into the head, bolt the follower on and check the gap with a feeler on the dwell phase of the cam, you have to do this numerous amounts of times to get it right which means taking the follower out then back in then out again(into the same position)....you get the picture. The only way you can lock them up is to put the main body in a vice (wrapped in ally of course) and hold the central part of the follower while locking the locknut with another spanner. It is a very time consuming process (2hrs +) and is very annoying the tightening process increases the length of the follower also!!
Once they are all set, you need to run the engine for around 1000miles or so then do it all again, but this time it is easier as all you need to do is check the gap with a feeler guage, see what it is and work out how much you need to adjust it buy, once this is established, you need to take out the follower, measure it with a micrometer, make a note of the reading, then set the micrometer to what the follower length should be. Sounds complicated but its simple when you start to do it!

Eg Gap in engine = 0.35mm
Desired gap = 0.15mm
Set micrometer to the length of the follower then increase the micrometer reading by 0.20mm and adjust the follower until it just passes through the micrometer (use the old fashined g-clamp style one, not the vernier digital kind)

Simple!

javierant3

Thank you very much for the explanation!
I see that is a annoying and time consuming process, but if the result is the adequate, I think it will be worth it.

I suppose that when the lifters are adjusted, it is advisable to re-adjust it once a year for example?

B16CVH

I would advise at least once a year, if you do high mileage then it may require a greater frquency of adjustment.

They are very good once they are set, i fitted these to a customers engine and they allow for a very high revving engine, which is nice!!

javierant3

I do about 7000 or 8000 mile each year. This car is a daily runner, what is annoying me is I have been making modifications to the engine, but it refuses to rev up.
Anything higher of 4500-5000rpm is very difficult to achieve, even at 5300-5500 the engine fails, like if it were rpm limited.

I think with my actual spec, the engine can rev up to 6000rpm without major problems.
My actual spec is:

Twin 40 DCOE
Facet silver top 200bhp fuel pump
Newman Phase 1 cam
Slightly worked head (not hemi)
Exhaust manifold from a xr3i MFI

A pic of my engine:

B16CVH

I would of thought revving passed the 5k barrier shouldnt be a problem, the Ph1 cam has a band of up to 6000rpm so i cannot see why this is the case. I fitted a Ph4 cam a few months back with the solids and its max bhp was at 6900rpm and it didnt struggle to get there either, it wasnt even running 40`s just a 34DMTR. The head however was worked by myself and had some serious work done to it.
It could be that it is badly setup or the cam may in some way be restricting the engine??

javierant3

I think that the problem is in the hydraulic followers, because they are noisy all the way. The first days after fitting them I thought that the noise were normal, but now after nine months using it the sound hasn`t disappeared. It`s a sound like a mechanic follower, and when I rev up the sound increases a lot.

Some days the noise is louder and the engine seem to rev up worse than the days when the lifters are making less noise.

I have revised all things and I suppose that the problem is in the lifters. Also I have removed the rocker cover and in the inspection found that the lifters that are in opening valve position have the tip that push on the rocker appears to a bit sunken.

This is one foto of the head work. It `s only a slight work, I only removed the imperfections and improved a bit the shape. I think for my specification is ok.

B16CVH

It could well be, the hydraulic followers should be relativley quite in operation (for an engine of that age anyway).

It maybe that the lifters bores are worn which in turn is reducing the oil pressure to the followers. There are a few people on this site though have had problems with these lifters.

By using the solids however would eradicate the problem as they do not rely on oil pressure to "take up the slck" between the cam and the rocker (if the bores arnt severely worn anyway) What oil are you using??

If you wanted more power, you would need to modify the head a lot more, especially on a N/A engine

This is the head from the engine i mentioned



https://passionford.com/forum/pictur...&pictureid=786

javierant3

Top work in that head mate!

My engine is a mild road and I don`t need such modification. I only want about 110 o 115 hp and I think that for this power my head is fine.

The head was checked prior to fitting, and their state is mint, with no wear on anything.
Also the oil pressure is good, as I have checked that too with a gauge.

Thanks for the advice.

B16CVH

No problem, good luck with the solid lifters if you go down that route!

javierant3

This weekend I made about 100 miles with the car , and I think my problem are the lifters anyway and will go for the mechanic route...

The car has power, but as said, the engine dies at about 5300 rpm. The sounds changes and the engine loses power. I had a weber DFT32/34 carb and the engine had exactly the same symptons. Because of that I suppose the lifters are crap as they are making quite noise.

Before this setup, I had previously the DFT32/34, but with standard cam and lifters and the car has not that problem.

Now my problem is finding anyone that will supply the set of mechanics here to Spain.
Also I have seen on the newmans catalog, they have a tool for adjusting the followers. Maybe that tool will be quite useful for adjusting the followers.

B16CVH

The tool is nothing more than something to hold the body of the follower, its no different to just wrapping a bit of aluminium around then to stop damaging them in a vice! (i was told this by Newman himself) So buying this will NOT help

I would of thought they would send you a set to Spain?????

With these fitted, you should rev up to 6k with ease!

javierant3

Thanks for the explanation, I thought that tool can help to adjust the lifters but then It`s not necessary.

I have the first present for christmas : set of Newman mechanic lifters for CVH