Are headstuds from an F20B the same as an H22A???

I have some of the measurements...

Stud is just under 8"
3" of thread

Well... Need more info let me know... I need to know ASAP
Thanks so much...

 

ttt

 

They should be... Headstud length is determined by the height of the head, and they both have a p13 head...

 

OK. Well I put them on order this morning. I am pretty sure they are the same, but thought I would ask to see if anyone knew for sure...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Sam1am26 &raquo;</TD></TR><TR><TD CLASS="quote">They should be... Headstud length is determined by the height of the head, and they both have a p13 head...</TD></TR></TABLE>

F20B's have PCB heads, where do you get your information from?

 

My mistake... I should have said "H22 Head"... The only major differences between an F20B head and an H22 Type-S head would be the combustion chambers...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MUGEN_CF4 &raquo;</TD></TR><TR><TD CLASS="quote">

F20B's have PCB heads, where do you get your information from?</TD></TR></TABLE>

In response to this...
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by This One &raquo;</TD></TR><TR><TD CLASS="quote">
F20b head.... bore is 85mm
I just measured it
so the head cc must be smaller than a typical h22 head...
this head is labeled with p13, not PCB like everyone says
</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by satan_srv &raquo;</TD></TR><TR><TD CLASS="quote">
F20B heads I have seen are labeled PCB above the exhaust ports...are you gonna CC the chambers?
</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by This One &raquo;</TD></TR><TR><TD CLASS="quote">yea it is laveled PCB above the exhuast ports, i was readin p13 in on the cam retainers

Yea Im going to try to CC it, gotta see what we have aorund here to do it</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by satan_srv &raquo;</TD></TR><TR><TD CLASS="quote">
F20B should be the only motor with a PCB stamp. The PCB head appears to be a Type-S P5P head with an 85mm bore on the combustion chamber.It's possible they did the bore to 85mm and just reshaped the cc to keep the same volume, i guess.</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by satan_srv &raquo;</TD></TR><TR><TD CLASS="quote">
Yeah the PCB head is the same as P13 except the cc bore as we have just learned, it's still the same CC. If you can get a H22 gasket with 85mm bore then all the better. </TD></TR></TABLE>

We are both right...

 

Yup, the F20B does state PCB above the exhaust ports. P13 is labeled on the side...

Headstuds are in and torqued down. Working great so far... Fireup should be mid next week.