Cam timing correction!? (WOODY MAY HELP)

[B16OJB]

I no when kevvo fitted his cams he was told thetiming was out and in woddys signature it says "cam timing correction".....

Is it often out?

 

[Foxspeed]

his were out because it had been to the dealers for some warranty work and put back slightly wrong

 

[Gouldy]

After Market cam shafts have different peak power settings compared to the OEM cam shafts.

If you buy after Market cams it tells you in the manufacturers instructions what degrees to set them to to run peak power.

 

[Ed...]

its intricate stuff mate. if ure 1 degree out u lose alot of power. it doesnt just happen on aftermarket cams. stock cams can also benefit from a timing correction.

the power is taken higher up in the rev band as on most aftermarket cams the stroke is longer.

 

[Gouldy]

You won't get anywhere messing about with the standard cams and timing.

 

[Ed...]

how do you know this gouldy?

 

[Ed...]

im only saying its a check as if they are out a fraction it kills performance.

 

[Gouldy]

how do you know this gouldy?

From many hours in Ricky - p rpm tench car specialist unit playing with race engines and amfew days with Wayne at chip wizards who is an engine management god.

Chipwizards was the first company in the uk to get throttle bodies to run and work perfectly on OEM management and they regularly install managemen on £250000 porche track toys.

 

[Ed...]

and you know this for a fact? thats all renault clio 197 engines that come out of the factory have perfect cam timing?

 

[mark_1873]

It depends what cams you get mate, what set are you thinking of going for ?

 

[Gouldy]

I never once said that or mentioned renaults build procedures or quality control measures that ensure the quality and standard of production.

Without a doubt some cars will be manufactured with faults, ie some cars will have the timing out a few degrees et etc but that is not the discussion we are currently having.

So back on topic.

 

[richandgem]

After Market cam shafts have different peak power settings compared to the OEM cam shafts.

If you buy after Market cams it tells you in the manufacturers instructions what degrees to set them to to run peak power.

Not necessarily true, the catcams that went in our 182 use the same timing and tools (I actually watched it being done) as standard. I've not had to have the timing checked or altered

 

[Foxspeed]

you do have the option with after market cams to alter the timing slighlty ie retard inlet cam etc

you can also pull this trick on some normal cars - iirc caterham do it on the ford sigma engine to alter the torque characterisitcs of the engine

 

[Gouldy]

Not necessarily true, the catcams that went in our 182 use the same timing and tools (I actually watched it being done) as standard. I've not had to have the timing checked or altered

That's correct, some different cars still have the same timing with aftermarket cams and the OEM cam shafts but it's very rare.

That's got me thinking, what gains did you see with just the new cams ?

Did you double check the degrees on the standard cams and the updated longer duration cam shafts?

Who fit the cams for you?

 

[Ed...]

there are lots of different makes of cams; kentcams, catcams etc i have 403's they are a race cam and idle at 1800 rpm. 402's are nearly exactly the same as OE cams but are classed as fast road.

 

[richandgem]

Fred @ BTM fitted the cams, and then Matt @ TDF remapped it. I have complete confidence that if the timing was out or needed doing Fred or Matt would have picked it up, especially when it was mapped.

The car made 9bhp more peak power, but the big difference was lower down, the bhp increases were higher lower down, and it made nearly 20flb more torque.

It had the 5k kick before the cams but it's just viscious when it's gets to 5k now

 

[Gouldy]

there are lots of different makes of cams; kentcams, catcams etc i have 403's they are a race cam and idle at 1800 rpm. 402's are nearly exactly the same as OE cams but are classed as fast road.

I know about the different makes of cams matey.

 

[Ed...]

ive gotta say mine would be scary at 5 k too lol as soon as it hit a point between 4.9 n 5k it was like some1 had lit a rocket on the rear bumper lol

 

[Ed...]

I know about the different makes of cams matey.

u gunna put some in ure van?

 

[Gouldy]

Fred @ BTM fitted the cams, and then Matt @ TDF remapped it. I have complete confidence that if the timing was out or needed doing Fred or Matt would have picked it up, especially when it was mapped.

The car made 9bhp more peak power, but the big difference was lower down, the bhp increases were higher lower down, and it made nearly 20flb more torque.

It had the 5k kick before the cams but it's just viscious when it's gets to 5k now

That's very interesting, normally cam Shafts that are more "lumpy" so to speak move the powerband further up the rev range thus reducing low down torque and increasing high end torque.

This allows the rev limited to be raised by a few hundred revolutions per minute achieving a higher top end horse power figure from the standard cams.