What cams?

[DaveH]

Sorted then??

[FlamingMonkey]

Aggressive timing is where its at Nana sounds awesome on tickover.

Nana isnt agressivly timed though, same timing as mine, Kent spec timing, agree it does sound good though

[big hp]

Sorted then??

Well the general concensus seems to be towards cat cams. Looking into them at the moment.

[Daz.]

CAT CAMS!!!

[cliokiz]

This is an interesting post... i'm hoping i can also get some advice from this.

Currently i have an F7R williams engine with a head which has been modified by GDI at some point in its life.

According to the invoice, it has 'Piper 270 profile cams' in it, and it's definately faster than a standard williams.

The problem is, its very tappy and Nick @ HP suggests they may have modified the head in a way which means it taps, or it's the cams that are making it tap. I've had the tappets replaced and the noise is still there the same as before.

It turns out that my head is now shagged as it's burning a serious amount of oil, so i need to source a new head.

I could use a standard head, but this engine has been RR'd at 160BHP, so i don't want to lose 10bhp by getting a standard head.

However, i don't want to re-use the cams i have now as i believe they are causing it to tap, so, if i get another head, what cams should i put in it?

I don't want it to tap, i want it to be a smooth drive (especially in low revs) as it's an everyday car but i would like it to be quicker than it currently is (if thats possible without screwing up the idle).

Im guessing i'm going to need a remap if i get some better cams, but what do you lot recommend?

I don't want to spend too much money but i'm happy to spend a bit to get it running right.

Cheers for any suggestions, sorry if this seems like a hijack but i thought it was kinda relevant..

[jay s]

This is an interesting post... i'm hoping i can also get some advice from this.

Currently i have an F7R williams engine with a head which has been modified by GDI at some point in its life.

According to the invoice, it has 'Piper 270 profile cams' in it, and it's definately faster than a standard williams.

The problem is, its very tappy and Nick @ HP suggests they may have modified the head in a way which means it taps, or it's the cams that are making it tap. I've had the tappets replaced and the noise is still there the same as before.

It turns out that my head is now shagged as it's burning a serious amount of oil, so i need to source a new head.

I could use a standard head, but this engine has been RR'd at 160BHP, so i don't want to lose 10bhp by getting a standard head.

However, i don't want to re-use the cams i have now as i believe they are causing it to tap, so, if i get another head, what cams should i put in it?

I don't want it to tap, i want it to be a smooth drive (especially in low revs) as it's an everyday car but i would like it to be quicker than it currently is (if thats possible without screwing up the idle).

Im guessing i'm going to need a remap if i get some better cams, but what do you lot recommend?

I don't want to spend too much money but i'm happy to spend a bit to get it running right.

Cheers for any suggestions, sorry if this seems like a hijack but i thought it was kinda relevant..

what makes you say its the cams that make it tap? ive got piper 270's in mine and covered 23000 miles with them in and they dont tap ( well unless its a very cold morning, once upto temp tho is quite as a mouse ) engine has also covered 108000 miles .

[DaveH]

Aggressive timing is where its at Nana sounds awesome on tickover.

Nana isnt agressivly timed though, same timing as mine, Kent spec timing, agree it does sound good though

Eye, no crazy timing here. Kent settings on mine.

Scott, I hope u know that Kent Cams are for REAL MEN???

You sure ste didnt give it a sly tweak to gain some extra horses Gaz?? Does sound rather lumpy on tickover for relatively mild cams! Will hopefully be contacting po-fo in the next couple of months to sort mine out.

[stan]

if they are set to factory figures, setting them more "aggressive" wont neccessarily gain anything...you may gain a couple of peak power figures, but you will loose out torque lower down. I know which i would rather have!

[stan]

This is an interesting post... i'm hoping i can also get some advice from this.

Currently i have an F7R williams engine with a head which has been modified by GDI at some point in its life.

According to the invoice, it has 'Piper 270 profile cams' in it, and it's definately faster than a standard williams.

The problem is, its very tappy and Nick @ HP suggests they may have modified the head in a way which means it taps, or it's the cams that are making it tap. I've had the tappets replaced and the noise is still there the same as before.

It turns out that my head is now shagged as it's burning a serious amount of oil, so i need to source a new head.

I could use a standard head, but this engine has been RR'd at 160BHP, so i don't want to lose 10bhp by getting a standard head.

However, i don't want to re-use the cams i have now as i believe they are causing it to tap, so, if i get another head, what cams should i put in it?

I don't want it to tap, i want it to be a smooth drive (especially in low revs) as it's an everyday car but i would like it to be quicker than it currently is (if thats possible without screwing up the idle).

Im guessing i'm going to need a remap if i get some better cams, but what do you lot recommend?

I don't want to spend too much money but i'm happy to spend a bit to get it running right.

Cheers for any suggestions, sorry if this seems like a hijack but i thought it was kinda relevant..

its probably the cams mate. They are regrinds, and consequently harsher on valve train. theres been a few cases ive seen where they have been noises, and im pretty sure they have all been from gdi.

160bhp isnt that great really for a supposedly modifed head....some stock engines are making that! as Gaz said above, a decently modified head will give you good gains. The only one ive done on stock cams made 173bhp and 157lbft, so for yours to be at 160bhp with cams AND head shows theres a problem somewhere.

If you want some better cams, drop me a pm.

[jay s]

This is an interesting post... i'm hoping i can also get some advice from this.

Currently i have an F7R williams engine with a head which has been modified by GDI at some point in its life.

According to the invoice, it has 'Piper 270 profile cams' in it, and it's definately faster than a standard williams.

The problem is, its very tappy and Nick @ HP suggests they may have modified the head in a way which means it taps, or it's the cams that are making it tap. I've had the tappets replaced and the noise is still there the same as before.

It turns out that my head is now shagged as it's burning a serious amount of oil, so i need to source a new head.

I could use a standard head, but this engine has been RR'd at 160BHP, so i don't want to lose 10bhp by getting a standard head.

However, i don't want to re-use the cams i have now as i believe they are causing it to tap, so, if i get another head, what cams should i put in it?

I don't want it to tap, i want it to be a smooth drive (especially in low revs) as it's an everyday car but i would like it to be quicker than it currently is (if thats possible without screwing up the idle).

Im guessing i'm going to need a remap if i get some better cams, but what do you lot recommend?

I don't want to spend too much money but i'm happy to spend a bit to get it running right.

Cheers for any suggestions, sorry if this seems like a hijack but i thought it was kinda relevant..

its probably the cams mate. They are regrinds, and consequently harsher on valve train. theres been a few cases ive seen where they have been noises, and im pretty sure they have all been from gdi.

160bhp isnt that great really for a supposedly modifed head....some stock engines are making that! as Gaz said above, a decently modified head will give you good gains. The only one ive done on stock cams made 173bhp and 157lbft, so for yours to be at 160bhp with cams AND head shows theres a problem somewhere.

If you want some better cams, drop me a pm.

stan, not all pipers are regrinds mate, piper do sell them made from blanks aswell. maybe the ones gdi sell are regrinds tho? i cant see the cams being that bad as mine are stilling holding up stong with no nasty side effects.