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[VXL V6]

I presume that Courtney have modified the block to address the cooling issues with the power increase?

Be interested to know what they did.

Also is this running on the standard exhaust manifolds?

[the alarming man]

and this is a tyre fitter....?

In short :-

yes, the speedo will be wrong - almost 4%, which is quite a large amount.

yes, the car will handle poorly - the suspension geometry is designed around the hub being 11.7 inches from the road. You're moving this up by half an inch, which is a massive amount, affecting handling, grip and stability under both cornering and braking.

seems this thread has gone slightly of topic - was only asking about tyres

I was just asking for opinions on this idea. I would not have gone ahead & done it without some advice from the forum.It was a possibility but maybe not now.  Seems it is not a good idea then 50 profile instead of 45 ?

Would the same bad handling issues occur if you used 18" rims & 40 profile tyres then ? :-/ :-/ :-/ :-/ :-/

looks like you thread as been hijacked!!

[Big_Al]

and this is a tyre fitter....?

In short :-

yes, the speedo will be wrong - almost 4%, which is quite a large amount.

yes, the car will handle poorly - the suspension geometry is designed around the hub being 11.7 inches from the road. You're moving this up by half an inch, which is a massive amount, affecting handling, grip and stability under both cornering and braking.

seems this thread has gone slightly of topic - was only asking about tyres

I was just asking for opinions on this idea. I would not have gone ahead & done it without some advice from the forum.It was a possibility but maybe not now.  Seems it is not a good idea then 50 profile instead of 45 ?

Would the same bad handling issues occur if you used 18" rims & 40 profile tyres then ? :-/ :-/ :-/ :-/ :-/

looks like you thread as been hijacked!!

Right outta my depth & too techie now   Mark  

&  I was only asking about tyres 

[51M0N]

I presume that Courtney have modified the block to address the cooling issues with the power increase?

Be interested to know what they did.

Also is this running on the standard exhaust manifolds?

Never gets hot so...... pass. not a concern lol

ex manifolds are standard, and restrictive as hell. looking into getting some made. i know someone on an x25xe used ford probe manifolds and welded the flanges on, whether this is possible on an x30 mounted the other way is something of a dark area.