Discussion
Ive had a go at timing my MC1 cam this week following the method below, i have a figure of 110 degrees to dial it in at
My first attempt with timing set straight up came up with a figure of 109 degrees at the crank, going by the below guide I would expect to see a figure closer to 118 degrees here.
This figure seems quite a way out to me, I have the Cloyes set with 3 keyways which are straight up, +4 and -4.
Ive not had chance to call V8 today and wanted to have another go on the weekend and wondered has anyone done a similar cam job or dialled in an MC1?
I realise I may have to tinker with the keyways but would be interested to hear from anyone who has done one or another cam.
http://www.v8developments.co.uk/technical/camshaft...
My first attempt with timing set straight up came up with a figure of 109 degrees at the crank, going by the below guide I would expect to see a figure closer to 118 degrees here.
This figure seems quite a way out to me, I have the Cloyes set with 3 keyways which are straight up, +4 and -4.
Ive not had chance to call V8 today and wanted to have another go on the weekend and wondered has anyone done a similar cam job or dialled in an MC1?
I realise I may have to tinker with the keyways but would be interested to hear from anyone who has done one or another cam.
http://www.v8developments.co.uk/technical/camshaft...
If indeed that figure is correct see above comment ^ then that cam as been ground correctly the only reason you need the vernier or multi slot timing sets is to allow for any machine error/offset when the cam is ground relative to the keyway if you are after 110 but found 109 then fit it 
that figure will soon recede to 110/111 once the timing chain stretches
that figure will soon recede to 110/111 once the timing chain stretches Sardonicus said:
If indeed that figure is correct see above comment ^ then that cam as been ground correctly the only reason you need the vernier or multi slot timing sets is to allow for any machine error/offset when the cam is ground relative to the keyway if you are after 110 but found 109 then fit it that figure will soon recede to 110/111 once the timing chain stretches
According to that V8D method my 110 at the crank is actually 104.5 at the cam or am I missing something? that figure will soon recede to 110/111 once the timing chain stretches Edited by Belle427 on Saturday 20th January 07:04
Ignore the bit about the cam turning at a different speed as it is not relevant.
You are just trying to set the maximum lift of the cam to coincide with 110 degrees of crank position.
You don't have a vernier cam wheel so fine adjustment is not possible.
Your gear set only has 3 fixed positions (some have 6) so your first result of 109 was pretty good and you have no options to get it better.
Steve
You are just trying to set the maximum lift of the cam to coincide with 110 degrees of crank position.
You don't have a vernier cam wheel so fine adjustment is not possible.
Your gear set only has 3 fixed positions (some have 6) so your first result of 109 was pretty good and you have no options to get it better.
Steve
Steve_D said:
Ignore the bit about the cam turning at a different speed as it is not relevant.
You are just trying to set the maximum lift of the cam to coincide with 110 degrees of crank position.
You don't have a vernier cam wheel so fine adjustment is not possible.
Your gear set only has 3 fixed positions (some have 6) so your first result of 109 was pretty good and you have no options to get it better.
Steve
Ok thanks. Makes more sense to me.You are just trying to set the maximum lift of the cam to coincide with 110 degrees of crank position.
You don't have a vernier cam wheel so fine adjustment is not possible.
Your gear set only has 3 fixed positions (some have 6) so your first result of 109 was pretty good and you have no options to get it better.
Steve
I spent a day triple checking everything this week and the final figure I had was 108 Degrees, slightly advanced but I don't think its enough to worry about.
I wont be able to do any better unless I install a Vernier set but i would expect this to go towards 110 when the chain etc beds in.
I wont be able to do any better unless I install a Vernier set but i would expect this to go towards 110 when the chain etc beds in.
In theory, the 108° will give you slightly more torque but slightly less bhp at a very slightly less rev ceiling level.
All in all, not noticeable at all unless you are doing back to back rolling road tests.
I do find it surprising how long it takes to time a cam in correctly as a novice when you are only doing it once in a couple of blue moons.
I find myself checking everything five times, backwards, forwards and every which way!
Better safe than sorry.
All in all, not noticeable at all unless you are doing back to back rolling road tests.
I do find it surprising how long it takes to time a cam in correctly as a novice when you are only doing it once in a couple of blue moons.
I find myself checking everything five times, backwards, forwards and every which way!
Better safe than sorry.
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