7 replies to this topic

[Racer_Pete]

Hi Guys just wonderd if you could help me with ansering what these Markings actually Mean?
I do know that it was obviously done in 91'

Thanks.

Edited by Racer_Pete, 06 June 2008 - 06:09 PM.

[wolfys_mini]

24cc chambers?

[Racer_Pete]

Yeh i did think the ''cc'' markings could be do to with that,
Silly Question but how do I actually tell what 'Stage' the head is?

Edited by Racer_Pete, 06 June 2008 - 06:14 PM.

[wolfys_mini]

is it in pieces?

will depends ont he valve sizes, what guides it has and what work has been done to the ports

0.076 maybe how much the head has been skimmed by? long shot though

[Racer_Pete]

is it in pieces?

will depends ont he valve sizes, what guides it has and what work has been done to the ports

0.076 maybe how much the head has been skimmed by? long shot though

Not in pieces just as it is with the valves still attached.
Would it be best to just ring Janspeed up them selves? worth a shot.

[wolfys_mini]

measure the valves, take out of each out aswell if poss, then pics

[JC T ONE]

Hello. I think you have a JanSpeed head made for forced induction, or nitro?. What I cant see from your pic, is if its an Aplus or A 11 stud ?. As you allready know last line is date and year. First line is built/serial no, mine is 5930. 24 cc is the size of heads combustion camber.You can check this easely. The 76 I am not shure of ? ( my head didnt have that line). Maybe overall hight of head when not shimmed? or how much it flows?

[62S]

Are you sure it is the real thing? I'd have thought Janspeed would know how to spell 'Janspeed'

Looks like it could be a small bore head from what you can see of it which might account for the big chamber capacity.