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Old 02-09-2008   #1
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Cams

Thinking of going for a gsr induction and cams upgrade pretty soon...who manufactures fast road/rally cams or would be willing to re-profile cams for the 1.6 16v stilo?
Do C&B do them?
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Old 05-09-2008   #2
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Cool Re: Cams

As I told you on PM.. CB cams are the best not regrinds and built specifically for the engine..its just hassle getting hold of them..
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Old 05-09-2008   #3
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Re: Cams

Quote Originally Posted by PNL View Post
As I told you on PM.. CB cams are the best not regrinds and built specifically for the engine..its just hassle getting hold of them..

Any idea who imports them? My dads had alfa C&B cams but I've no idea who might import the fiat ones.
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Old 05-09-2008   #4
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Re: Cams

do you intend to fit a 4 branch manifold in the future? if so then off the shelf cams will be no good for you.

there is a 1.6 stilo gsr kit in classifieds
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Old 05-09-2008   #5
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Re: Cams

why would a manifold render a cam change useless?
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Old 05-09-2008   #6
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Re: Cams

Quote Originally Posted by Yazza54 View Post
why would a manifold render a cam change useless?
its all too technical for me to understand fully, i was in the middle of a conversation between a group of tuners and exhaust makers the other night, and this is what they was all talking about, i will try and get them to explain it too me in a way i can remember and type
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Old 05-09-2008   #7
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Re: Cams

Quote Originally Posted by dave View Post
its all too technical for me to understand fully, i was in the middle of a conversation between a group of tuners and exhaust makers the other night, and this is what they was all talking about, i will try and get them to explain it too me in a way i can remember and type

please do doesnt make much sense to me
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Old 05-09-2008   #8
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Re: Cams

Quote Originally Posted by dave View Post
do you intend to fit a 4 branch manifold in the future? if so then off the shelf cams will be no good for you.

there is a 1.6 stilo gsr kit in classifieds
Sorry but that is wrong. As a change of cams will allow the engine to breathe better, if you then change the restrictive air intake and change to a 4 into 2 into 1 exhaust manifold it will make better use of the cams as the air is able to get into the engine faster and it is also able to get rid of the waste gasses better as well. the cam timing might need to be altered slightly by use of a vernier pulley to make best use of the better breathing and also some time on a rolling road so that it can be set up properly.
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Old 05-09-2008   #9
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Re: Cams

Quote Originally Posted by broken_brian View Post
Sorry but that is wrong. As a change of cams will allow the engine to breathe better, if you then change the restrictive air intake and change to a 4 into 2 into 1 exhaust manifold it will make better use of the cams as the air is able to get into the engine faster and it is also able to get rid of the waste gasses better as well. the cam timing might need to be altered slightly by use of a vernier pulley to make best use of the better breathing and also some time on a rolling road so that it can be set up properly.
Wrong interprataion of the use of vernier pulley.

Also it depends on the cam characteristics how the exhaust manifold has got to be.
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Old 06-09-2008   #10
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Re: Cams

If you have vernier pulleys on both inlet and exhaust cams you can dial the cam in to suit the pulsewave characteristics of the inlet and exhust systems to give better cylinder filling and scavenging of the waste gasses and you can also dial the power high in the rev range giving a narow powerband that needs to be reved to get the best out of it not good for road use, or you can set it up for a better spread of torque which is better for road use.

I was mearly saying that the statement made about aftermarket manifolds not working with off the self cams was not true, and tried to explain it in a relativley simple way.
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Old 06-09-2008   #11
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Re: Cams

You will never get very good results with an aftermarket of the shelf cam and an aftermarket off the shelf manifold. This is fact.
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Old 07-09-2008   #12
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Re: Cams

Quote Originally Posted by Oldschool View Post
You will never get very good results with an aftermarket of the shelf cam and an aftermarket off the shelf manifold. This is fact.
Hmmm, not so sure that's entirely accurate Peter, a very sweeping statement. An awful lot depends on the engine and the 'age' of the technology. I am sure that what you're saying is true for modern engines but take a good old fiat/lancia twincam - let's say a 2 litre 8 valve integrale - take an off the shelf Kent/Guy Croft GC3A or even a Strada 130 inlet camshaft on it's own (matched with a vernier) and the more agressive cam gives an immediate improvement.
Match that to, say, an off the shelf CSC exhaust and you will get good results.

However, I don't dispute that in more contemporary engines it will be more difficult, but not impossible, to get good results with off the shelf parts. I suppose in part that explains why re-mapping is so successful.

So off the shelf parts still have their place in tuning, I guess you just have to be choosy where you get them and what you buy
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Old 07-09-2008   #13
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Re: Cams

Well done abzstilo someone that understands what i was trying to say

Plus you cant beat a good old debate on forums thats what makes them so good

Modern engines may be more sesitive to changes due to the tighter emission controls put on them but a cam and manifold plus a remap and rolling road setup from a reputable company will still always produce better results than just a cam with a standard cast manifold...
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Old 08-09-2008   #14
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Re: Cams

why would you want to mess about with vernier pulleys and stuff when you can just get a cam machined right in the first place to match a manifold that is also right
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Last edited by dave; 08-09-2008 at 01:18.
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Old 08-09-2008   #15
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Re: Cams

Quote Originally Posted by dave View Post
why would you want to mess about with vernier pulleys and stuff when you can just get a cam machined right in the first place to match a manifold that is also right
at a cheaper cost too no doubt

i understand both arguments though
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