K8 Turbo Warning!!!!

[Skomansteve]

This post is from the supplier who sold me my K8 - He is having his new BKing turbo'd at the moment by THE most respected Turbo installer in the UK and he posted this.............
(Woodsy) Just a word of advice for anybody thinking about either adding a turbo or nitrous to the K8 Busa.
The K8 runs titanium valves and springs to help with high revving power....all well and good but they basically just let go when you get the extreme heat you get with turbo's or nos.
After a chat with Sean at Big CC it now looks like my motor has gotta come back out just when it was getting close to finishing and stainless steel valves and springs have got to be fitted........oh joy!!!!...more money in the bike that has become a money pit.

Be warned !

[Tybalt]

This post is from the supplier who sold me my K8 - He is having his new BKing turbo'd at the moment by THE most respected Turbo installer in the UK and he posted this.............
(Woodsy) Just a word of advice for anybody thinking about either adding a turbo or nitrous to the K8 Busa.
The K8 runs titanium valves and springs to help with high revving power....all well and good but they basically just let go when you get the extreme heat you get with turbo's or nos.
After a chat with Sean at Big CC it now looks like my motor has gotta come back out just when it was getting close to finishing and stainless steel valves and springs have got to be fitted........oh joy!!!!...more money in the bike that has become a money pit.

Be warned !
:surprise: SKO is going Turbo?:cheers: Atta boy:banana: I think I read that you can go 6 lbs boost safely on the K8 Busas?

[Skomansteve]

:surprise: SKO is going Turbo?:cheers: Atta boy:banana: I think I read that you can go 6 lbs boost safely on the K8 Busas?

Nooooooooooo - not me! - I wish..............:oh yeah:

[Pinky]

3.5 is recommended for k8 busas
any more and youll need an upgraded valves and springs
Ti valves arent as strong as stainless and will melt as said and break under higher spring pressures which will be needed when boosting a bike

i wouldnt recommend 6 pounds on a stock k8 due to the compression and the valves

[Skomansteve]

3.5 is recommended for k8 busas
any more and youll need an upgraded valves and springs
Ti valves arent as strong as stainless and will melt as said and break under higher spring pressures which will be needed when boosting a bike

i wouldnt recommend 6 pounds on a stock k8 due to the compression and the valves

This is Woodsy's original post :thumbs up:


As you may know i am currently having a Turbo B King being built by Sean at Big CC.
The build started in October and has been slow due to the fact that it is a new model and there aren't any bits available.The idea was to originally just bolt on a modular kit and have done with.....that was b4 a chat with Sean at the NEC show where i agreed to turbo pistons,adjustable cam sprockets,clutch upgrade etc
Today i have chatted to Sean again(always a dangerous thing to do http://www.ukbusas.org/forum/style_emoticons/default/mh%20%281%29.gif )and i have agreed that we are going to use my bike as a "guinea pig"and go in the deep end with a stage 2 kit.
This should see 350bhp on pump fuel.......more on race fuel http://www.ukbusas.org/forum/style_emoticons/default/a.gif ......all this and i'm not going to run an extended swing arm this time...
Wheelies here i come http://www.ukbusas.org/forum/style_emoticons/default/thumbs%5B1%5D.gif
Can't wait......Sean is a top bloke http://www.bigccracing.com/content/item.asp?item=69http://www.ukbusas.org/forum/style_emoticons/default/thumbs%5B1%5D.gif

:surprise:

[Got-Busa?]

I don't really understand how Titanium valves aren't as strong as Stainless....? I always thought that Titanium was much stronger even under extreme heat.

I'm wondering if really the valve springs are failing causing the damage when hitting the pistons or if the valve it's self is failing....?

[Tybalt]

I don't really understand how Titanium valves aren't as strong as Stainless....? I always thought that Titanium was much stronger even under extreme heat.

I'm wondering if really the valve springs are failing causing the damage when hitting the pistons or if the valve it's self is failing....?

I found this out the hard way:head meets wall: i was playing with Ti pipes and I was playing around to get the mid pipes(Ti) 2.25 bore to fit into a different Ti can and I had the welding torch touch the mid pipe to make a cut and it disolved!!!!!!:head meets wall: the Ti just evaporated with the heat, i was WTF?:head meets wall:

[Pinky]

The tensile strength of Ti is lower then most think
its reason for being so liked is its weight to stregth ratio

SS is alot stronger and more resistant to heat

[Got-Busa?]

I didn't think about the tensile strength being that much different. I guess I was all excited about it's weight advantage over SS... :(

[Pinky]

the melting point is the other issue
NA its great but an additional power adder will cause higher internal temps and burn parts up

[WITCH HUNTER]

If you want to run an 08 on standard compression then you have a limit of 4lb of boost.
We have now built three 08 turbo kits, even a stage one kit with lower compression [spacer plate ] we had to dump the valves and springs to be able to maintain a reliable 7lb of boost. Once stainless valves and springs are fitted they run superb.