Big Bore Head Kits - Finally!

[Brooks]

Big Bore Head Kits are finally coming! Your ADA Racing dealer should have them available next week!

Here is what coming along with suggested retail:

34mm big bore head kit - $139.95

34mm big bore head kit w/+2mm stroker - $189.95

All head kits come with machine cylinder, head shell, dome, piston kit, gaskets, hardware, & spark plug!

The kits with the +2mm stroker have special machined cylinders for the +2mm stroker, no additional copper head gaskets will be required.

[Slimcandy428]

Sweet. Same head shell design?

[Sick Shift]

sick, pics? As mike said is the shell gunna be the same?

[Brooks]

Same head shell for now. Eventually, we will be designing a new head shell, but not anytime soon.

[Bill L.]

very nice i might buy a 35 mm w/ a 2 mm stroker ill have to see but very nice and the pricing is awsome

[pedhead7]

Its about Fuggin Time, Im gonna Buy One of those Bad Boys.
Will the pistons Come Modded for the Stroker?
Also, what do you torque the Bolts down at???

Ill be going to harbor freight soon for some things, so I might as well pick Up a Torque wrench.

[sick-fast]

sweet

[Brooks]

Update

The 35mm kits are on hold for now. After machining one for testing, we are concerned about the quality. We will need to do more testing before proceeding with the 35mm big bore head kits.

The 35mm cylinders are not the same quality as the Superior 34mm cylinders. The plating on the cylinder wall does not go high enough to fully capture the ring with a +2mm stroker. At tdc the ring is more than 50% out of the bore. We will need to order a new batch of cylinders to see if they have fixed this problem. During assembly everything rotates fine, but during operation, the ring may wear at the plating on the cylinder wall from the top down.

The other company offering the 35mm with a +2mm stroker may not even know there is a potential problem with the combination.

[Jeff23]

But the standard 25.4cc big bore will be avaible next week?

[pedhead7]

Re: Update

Originally posted by Brooks

The other company offering the 35mm with a +2mm stroker may not even know there is a potential problem with the combination.

Just Curious, Who are They?

With the 35 MM, is there still a problem with Blowing Base Gaskets? Also, If choose the 35 MM, Once you get the Problem Worked out, Will it be Repalced if the Cylinder Cracks in Half?

Also, Are the Skirts of the Piston Milled to Clear the Counter-weights?

[Brooks]

Originally posted by Jeff23
But the standard 25.4cc big bore will be avaible next week?

Dealers can order them now, so they should have them in-store next week.

They will be available on our retail site next Friday, 4/2.

We are giving our dealers a heads-up to get started on them.

[Brooks]

Re: Re: Update

Originally posted by pedhead7
Just Curious, Who are They?

With the 35 MM, is there still a problem with Blowing Base Gaskets? Also, If choose the 35 MM, Once you get the Problem Worked out, Will it be Repalced if the Cylinder Cracks in Half?

Also, Are the Skirts of the Piston Milled to Clear the Counter-weights?

If you look around on the internet(GPN), you can find out who 'they' are.

The current 35mm big bore cylinder that we have, has no warranty, with or without a headkit. We are working on a new and much improved 35mm big bore cylinder for the headkit, but there is no due date available on them yet.

Yes, the piston will be clearanced for the stroker.

[pedhead7]

Re: Re: Re: Update

Originally posted by Brooks
If you look around on the internet(GPN), you can find out who 'they' are.

The current 35mm big bore cylinder that we have, has no warranty, with or without a headkit. We are working on a new and much improved 35mm big bore cylinder for the headkit, but there is no due date available on them yet.

Yes, the piston will be clearanced for the stroker.

Improved How? I wouldnt Mind seeing a Little bit bigger Transfers, Porting Takes to Long.........

Hmmm You got a Tighter Squish band, Bigger Bore, Yet Smaller, Narrow Transfers on the 35mm BBK. So whatcha Going to Change?
So If the Cylinder Cracks in half, You SOL?
I think Ill pick Myself up a 34mm.....
Do the Cylinder Heads Fit Under engine Covers, If not, Could You widen the Hole for the Spark Plug, or is It Just plain to Big?
Hmmm Stalker, engine cover,black Head, "super Cooler" and Ive got me a Heck of a Sleeper..........

Thanks

[Kman]

Sounds awesome. Pictures would be great.

[sick-fast]

hey brooks, why not have a design competition for the head shell? see who can design the coolest head shells, the put up a poll of the best ones, and have people vote? even if it doesnt get used when you eventually decide to change it around, it would be pretty fun, i dont know if any company has had a contest like that before? but i have some designs that would look pretty badass

oh, and i got 1st place in USSRL novice lightweight 30cc air tire, and 3rd place in USSRL novice lightweight 30cc hard tire.