New uprated cat cams.

[ArjanRS]

Hello,

Since my cat cams now in the car are a bit worn (got some damage from metal pieces in the lube canals).
I'm now in a need of a new set cams.
I found this uprated cams, type: 5502420.

Will this fit into my clio without any other adjustments, i do need new upper bearings in the rocker cover.. are they easily to replace?

K-tec says this about the camshafts: 5502420, This is the Renault Sport Group N profile and they are machined to the maximum limits allowed. Will work with the standard hydraulic followers and valve springs.
Q: Will the 5502420 group N cams work with the standard ECU
A: Yes, these cams are the mildest of the range and will work with the stock ECU, of course its important to get any conversion checked and possibly remapped.

What kind of cams are these?

So i don't need a new ECU, valves etc. Only the upper 'oil bearings'.

Anyone got some of these fitted in their engines?

Greetings, Arjan. from the netherlands.

 

[Iceberg_172]

They are near standard if i remember. I asked about them a while ago. They should be ok to use with standard ecu etc.

As for the bearing caps/journals. Arent they part of the rocker cover so you would need to change to rocker cover?

Someone else will be able to advise you a bit better but might just say the same as i have

 

[ArjanRS]

The bearing caps are not that chubby, it's more that the shaft got some slightly damage. It's just like a break disc with grooves in it, but in the shaft it's much smaller

I think that once fitted (bearing caps and a shafts) you need to replace them both. Again similar to break discs and pads.

 

[Dan519]

fitting those cams is a total waste of time. They're stock, but made to a better tollerence so they're legal for group n (standard engine) racing classes.

 

[ArjanRS]

Excuse me, the type number of the shafts are 5502402!
Does that makes any difference..?

 

[JackJack]

Get some different ones.

 

[Iceberg_172]

5502402? never heard of them from cat cams for renault

 

[ArjanRS]

http://m.marktplaats.nl/a/auto-onde...e27c274e75147b4afd0f5eb58c81b&previousPage=lr

thats the link to the shafts, a dutch site for selling/buying stuff

 

[Iceberg_172]

they aint cat cams

 

[Fred@BTM]

its just a misprint

 

[Dan519]

402's are for a 197/200. No good for you

 

[Iceberg_172]

put in some cat cams 5502428's

 

[ArjanRS]

Okay!
Do i have to replace the bearing caps, if they can be replaced?

 

[Iceberg_172]

im sure the bearing caps are part of the cam cover and are not separate. new cam cover if they are damaged. if they aint damaged they should be ok to use

 

[Dan519]

no, the bearing caps are part of the rocker cover, which is matched to the head.

Don't bother with 428's. Too mild for the cost.

 

[Iceberg_172]

surely better than 420's and he wont need to change anything (springs etc)

 

[Dan519]

loads of better options that can fulfil that criteria. Anything non standard will need mapping obviously.

 

[ArjanRS]

Mapping is not a problem.
The lower bearing caps are also a bit damaged..

 

[Dan519]

if the journals are scored, you can clean up light marks/grooves with fine emery paper. If it's serious, then you may be looking at having to replace the head. Bearings are not replaceable unfortunately. I have 2 heads that are scrap because of the same thing

 

[ArjanRS]

Hmmmhmm, i'm not planning to replace the head
I'll have a look when we take the rocker cover off again soon!
Thanks for the advice, i wont take those 5502402 shafts then
I'll be back in this topic with pictures from the caps and shafts when taking off the cover again.