Cams scoring casing

[sri_130]

I've come to fit 708s and the inlet cam wouldn't turn after fitting. Removed to check and found the cams are scoring the casing.
Anyone ever had this?
Exhaust cam is fine.

[DanTvts]

A few people have had to remove some material from the cam ladders in the past, i'm pretty sure when i bought mine way back when it did actually mention you may have to do this.
Luckily mine were fine but as i said its not unheard of.

Edit: Got mixed up with the area you were talking about, ignore me!

[axsaxoman]

no it is not normal --you haven,t mixed up the ladders from another head ?
they are matched to the head --you cannot swop them
I am presuming you are talking about the bearing surface of the cams and not the cam catching on a web outside of the bearing areas
It is not a common problem for you to have to modify the head to fit cams --I have never had to do it

[DanTvts]

Just realised i slightly mis-read the original post somehow, i'm not talking about the same area here, ignore me sorry!

[sri_130]

Hopefully you can see the scoring.
Got the dremel out in the end.

Did a more thorough search to find that others have had the same.

http://img.tapatalk.com/d/12/10/16/quva4yre.jpg

[xsi16v]

Must be a "Friday" head haha. Seems to be excess material from when it was cast. I have never heard of it done, seems to be nearer the side of the lobe?. 708's must be wider lobes than standard then?

[sri_130]

Must be a "Friday" head haha. Seems to be excess material from when it was cast. I have never heard of it done, seems to be nearer the side of the lobe?. 708's must be wider lobes than standard then?

I'd guess so.

[axsaxoman]

is this on a j4 or a jp4 head?
valve spacing is different

[sri_130]

is this on a j4 or a jp4 head?
valve spacing is different

I'm sorry, I don't understand the difference.

[atspeedracing]

j4 / jp4 the distance between the inlet valves is closer or wider apart.

does the number on your cams start with 1321, or 1322 ?

ignore the head for the moment - does the cam lobe run CENTRALLY over the cam follower / buckets ?? or are they biased to one sideof the follower?

- colin.

[sri_130]

j4 / jp4 the distance between the inlet valves is closer or wider apart.

does the number on your cams start with 1321, or 1322 ?

ignore the head for the moment - does the cam lobe run CENTRALLY over the cam follower / buckets ?? or are they biased to one sideof the follower?

- colin.

I wish I could tell you, they're installed. And the at power bodies installed too. Runs like a dream.