coozer
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 posted on 28/7/08 at 07:05 PM |
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Zetec cam ID.
How do I identify the cams I have in my 1.8 engine against what I believe are 2L jobs on the bench?
Before I rip them out of my perfectly running 1.8 I want to make sure the ones in the engine are indeed 1.8's as I have no history of the
engine, and, I want to be sure the ones I've just took out of a spare, what I believe is a 2L head are indeed 2L.
1. Any visual difference between 1.8 & 2L heads?
2. How do I identify the cams please??
Thanks,
Steve
1972 V8 Jago
1980 Z750
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piddy
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| posted on 28/7/08 at 07:27 PM |
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This may help
link
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r1_pete
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| posted on 28/7/08 at 07:40 PM |
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Here you go Linky
Beaten to it.......
[Edited on 28/7/08 by r1_pete]
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coozer
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| posted on 28/7/08 at 09:03 PM |
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Thanks chaps, knew there was a thread but couldn't find it searching.
I can now confirm I have the 136 variety to go in.
Cheers!
Steve
1972 V8 Jago
1980 Z750
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procomp
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| posted on 29/7/08 at 07:09 AM |
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Hi the idea of checking what cams they are from the lobes is only part off the process of identifying the cams.
The problems are that Ford have continuously messed with the profiles over the years for emissions purposes. What that all means is that although you
may have a set of 136 ps 2.0L cams working from the identification of the rings on the cams. It dose not necessarily mean that they have the best
profile on them. And there is no way of checking that other than actually mapping the cams out accurately.
However for sure the cams that give the best performance are the very original ESCORT / ORION / FIESTA 130ps items as these where when they where not
to fussed as to to the emissions but where interested in launching the cars with a bit of performance. But they where only around for 18months MAX.
Then they switched that spec to the softer profile 20.L cams and they have backed the profile of over the years for emissions. This is why almost all
racing Championships that used the 1.8 130ps spec engine had to switch to controlled cams as there is no consistency to the cams over the years of
production.
Although before you start getting worried about big performance losses. The difference between a set of the original 130ps spec cams and the last
of the 2.0L cams was a whole 5-7 HP. That is a huge margin when looking at blue printed race spec engines for various formulas but for road use no big
deal.
Cheers Matt
PS if looking for what should be mapping info regarding the original 130ps spec cams it can be found here on page 19 of the BARC Westfield
regulations. I believe this mapping info is what was also used by the formula Ford guys also.
LINK HERE
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coozer
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| posted on 29/7/08 at 11:25 AM |
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Thanks Matt, not sure what all that mapping business is, I have a 1994 engine from an Escort and the 2L cams have come from a head with 1995 stamped
on it.
All I'm after is the extra 10-15bhp i'm led to beleive can be had with this cahnge.
HOWEVER, i need to check which cams are already in the 1.8 as I'm quite supprised how eager it is when reved hard. Rev limit in third and fourth
is reached very quickly so i'm going to have a look under the cam cover tonight to see whats in there before I rip it apart
Steve
1972 V8 Jago
1980 Z750
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procomp
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| posted on 31/7/08 at 07:13 AM |
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Hi if you find you have the STD 105- 115 ps cams then switching to the 20.l cams will give you that bit extra you are looking for.
The mapping business is basically measuring the lift on the cams every 5 degrees or closer if really keen. The info in the Westfield regs link gives a
good indication as to what the original 130ps spec cams where in term of lift at the various degree angles.
Cheers matt
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