HD head studs

[thebig450es]

Im planning on boring and going with a high compression piston, where can i buy HD studs and how do i install them . Thanks

[lilyamaharacer4]

A machine shop has to install the studs

[thebig450es]

I found GT Thunder has them with directions , anyone else?

[droppedmazda]

t&t motorsports will sell you the studs and put them in for $135. they're a sponser on this site. their ad is on the first page of this site also. IMO they're way better studs than gt thunder. give jimmy a call and ask him about it.

[rob_990]

GTT

[malibuj]

I have a brand new set GTT head studs I don't need. Bought them then I sold the bike.


PM me if interested.


Jason

[Honda5]

The gtt studs work great.
malibuj if he doesn't want them shoot me a price for them

[2muchquad]

if you look around there are hd studs that thread into the stock cylinder threads so you dont need any machine work,they are a bigger diameter

[zrpilot]

Originally posted by droppedmazda
t&t motorsports will sell you the studs and put them in for $135. they're a sponser on this site. their ad is on the first page of this site also. IMO they're way better studs than gt thunder. give jimmy a call and ask him about it.

Why are they better?

[2muchquad]

for some reason there is a lot of loyalty to gt,like i guess they are the authority when it comes to the 400ex...:rolleyes:

[droppedmazda]

they are bigger than gtt. they are are longer also. i had gtt in my bike and blew a head gasket so i went looking for new ones and found the ones that t&t has and tried them. so far i love them.

why would you want a stud that threads into the stock holes. the problem isn't that they break. the problem is that they pull out of the cylinder. so by being longer and fatter at the threads, it helps so that they are alot harder to pull out.

[zrpilot]

Originally posted by droppedmazda
they are bigger than gtt. they are are longer also. i had gtt in my bike and blew a head gasket so i went looking for new ones and found the ones that t&t has and tried them. so far i love them.

why would you want a stud that threads into the stock holes. the problem isn't that they break. the problem is that they pull out of the cylinder. so by being longer and fatter at the threads, it helps so that they are alot harder to pull out.
I don't know about the T&T head studs, but you are wrong about the GT Thunder studs.

They are bigger then stock, use a longer and bigger thread and should be put in by a professional because the head must be drilled deeper and then threaded using a ROLL form thread.

When you had the GT Thunder heads studs, you must have re-cut the threads on your head and the T&T head studs share this same thread?

here is a picture of the stock vs. GT Thunder head studs and you can clearly see they are bigger.

[F-16Guy]

A roll form tap is the key. If you re-cut the threads, you'll probably end up in the same boat down the road. If Honda would roll the threads during manufacturing, there probably wouldn't be so many issues.

[droppedmazda]

i wasnt saying that gtt wasn't bigger than stock. "2muchquad" said that you could get studs to thread into the stock holes. that is what i was talking about. the gtt studs are bigger than stock but smaller than t&t studs. we had to take the gtt studs out and drilll and tap the holes bigger for the new studs. i'm not trying to say gtt studs wont work but the t&t suds are cheaper and seem to work better for me. i'm running 14.1 compression with a 4 mil stroke and nitrous and they're holding up great.

[zrpilot]

Originally posted by droppedmazda
i wasnt saying that gtt wasn't bigger than stock. "2muchquad" said that you could get studs to thread into the stock holes. that is what i was talking about. the gtt studs are bigger than stock but smaller than t&t studs. we had to take the gtt studs out and drilll and tap the holes bigger for the new studs. i'm not trying to say gtt studs wont work but the t&t suds are cheaper and seem to work better for me. i'm running 14.1 compression with a 4 mil stroke and nitrous and they're holding up great.

Did you re-bore after you put the head studs in?

[droppedmazda]

no, why would i?

[zrpilot]

Originally posted by droppedmazda
no, why would i?

Because the act of cutting larger threads that are closer to the cylinder sleeve has a great pontential to distort the cylinder bore causeing it to go out of round.

Mine did after Laz put the HD heads studs and had to re-bore to make round again.

[bbender85]

zrpilot how far out was it? my head studs are in the mail, and i am hoping i can get away with just a hone, since i'm already at 88mm.

[zrpilot]

Originally posted by bbender85
zrpilot how far out was it? my head studs are in the mail, and i am hoping i can get away with just a hone, since i'm already at 88mm. A good hone will work as well.

[droppedmazda]

we did hone the cylinder after the studs were back in. everything seems to be working fine. we have already raced it once since the head studs and are racing tonight. i hope to have video up of the bike racing after tonights race.