159 replies to this topic

[CHILL Gone DUTCH]

[ghand]

No you need a wheel arch liner. Why not run it at full bhp and see how long it lasts, how do know the standard kit will not last a long time? Go on, destructive testing, you know it makes sense.

[CHILL Gone DUTCH]

I got arch linear on order nearly cost as much as these bad boys

[fezzasus]

Get the pistons at the same time. It's false economy to only get the rods given the work involved.

 

http://www.ebay.co.u...=item2c6f3be672

 

[CHILL Gone DUTCH]

Would that not require head work etc etc

[Claws]

No you need a wheel arch liner.

Touchè

[CHILL Gone DUTCH]

No you need a wheel arch liner.

Touchè

He will be there soon now he has got track bug

[fezzasus]

Would that not require head work etc etc

 

No. changing the pistons will never require headwork. changing to a overbored piston will require a rebore, but you can buy standard size from that website which will drop straight in. given that you have to remove both the piston and conrod from the engine to fit the new conrods, it doesn't make sense to put a piston back in that can only cope with around 300 bhp when you're pushing 270/80 as it is.

 

BTW. I have smaller pulley wheels going spare if you go down this route.

[CHILL Gone DUTCH]

Would that not require head work etc etc

  No. changing the pistons will never require headwork. changing to a overbored piston will require a rebore, but you can buy standard size from that website which will drop straight in. given that you have to remove both the piston and conrod from the engine to fit the new conrods, it doesn't make sense to put a piston back in that can only cope with around 300 bhp when you're pushing 270/80 as it is.   BTW. I have smaller pulley wheels going spare if you go down this route.

I've turned it down to 250 ish until I have done rods which I thought would allow me to go to 300 ponies if I could get the hardware right

[CHILL Gone DUTCH]

And I've got to get the engine temps down First cutting clam possibilities to get hot air out

[fezzasus]

Winstar did some work which showed that fitting larger NACA ducts is the best way to increase engine airflow.

 

Probably the cheapest way to do it too.

[slindborg]

Would that not require head work etc etc

  No. changing the pistons will never require headwork. changing to a overbored piston will require a rebore, but you can buy standard size from that website which will drop straight in. given that you have to remove both the piston and conrod from the engine to fit the new conrods, it doesn't make sense to put a piston back in that can only cope with around 300 bhp when you're pushing 270/80 as it is.   BTW. I have smaller pulley wheels going spare if you go down this route.

If that's 270/280 at the fly, then the pistons are already seeing 300bhp, if not more.

[CHILL Gone DUTCH]

Winstar did some work which showed that fitting larger NACA ducts is the best way to increase engine airflow.   Probably the cheapest way to do it too.

Just done searches on this subject going to give them ago I have no ducts on my undertray Going to space of rear diffuser from clam to never even thought of this

Edited by CHILL Gone DUTCH, 13 August 2013 - 09:11 PM.

[ghand]

Winstar did some work which showed that fitting larger NACA ducts is the best way to increase engine airflow.   Probably the cheapest way to do it too.

Just done searches on this subject going to give them ago I have no ducts on my undertray

Pity it wasn't the rear liner you lost then

[fezzasus]

 

Winstar did some work which showed that fitting larger NACA ducts is the best way to increase engine airflow.   Probably the cheapest way to do it too.

Just done searches on this subject going to give them ago I have no ducts on my undertray Going to space of rear diffuser from clam to never even thought of this

 

 

Replacement NACA ducts are £3 ish from Elise Shop (you'll need to find the part code), if that helps.

[ghand]

 

Winstar did some work which showed that fitting larger NACA ducts is the best way to increase engine airflow.   Probably the cheapest way to do it too.

Just done searches on this subject going to give them ago I have no ducts on my undertray Going to space of rear diffuser from clam to never even thought of this  

  Replacement NACA ducts are £3 ish from Elise Shop (you'll need to find the part code), if that helps.

Do you need an under tray ? All the fast ish cars I had a long long time back did not have them. ( scotch fuelled question lol)

[CHILL Gone DUTCH]

Without under tray you would effect dynamics and rear of clam would be floppy

[fezzasus]

Good question, and I think the answer is a speed dependant one. The flat underside of the car will aid aero, and has a secondary feature which is adding stiffness to the bodywork - an issue most cars don't have because they're metal. But that's only really going to start to matter at motorway speeds or greater.

 

There are people here who run, or have run, without under trays. Personally i don't see it as bad weight, or have an issue with cooling, so it stays on. It also protects the car from salt and grit.

[CHILL Gone DUTCH]

I can't help thinking that ducting higher up would be more effective

[Bargi]

Wow, £250 I offered seems way cheap if that's what they're worth less duty and shipping