Drivetrain Blew UP!
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5th Gear
Joined: Nov 2004
Posts: 890
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From: Rutherfordton, NC
Well guys I think it may just be a burnt valve. I did a comp test today and I saw 50psi. I can't wait to pull the head off this weekend. The moment of truth awaits!
Also I was running stock fuel pressure with a bone stock head. And I am running an open header right now also. The thing sounds nasty idling. I hope when I put a cam in the head it will sound like it does now at idle.
Also I was running stock fuel pressure with a bone stock head. And I am running an open header right now also. The thing sounds nasty idling. I hope when I put a cam in the head it will sound like it does now at idle.
Banned
Joined: Jul 2005
Posts: 1,640
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From: Flitwick UK
You got to admit the engine does bloody well to handle all this abus eyou lot give it
when you consider that the camshaft and head is the same one found in the natuallly aspirated cooper and the one(uk).
Sounds like more exhaust duration on the cam is needed to me, does anyone know what a stock head flows???
when you consider that the camshaft and head is the same one found in the natuallly aspirated cooper and the one(uk).Sounds like more exhaust duration on the cam is needed to me, does anyone know what a stock head flows???
stroke it!! ....cant go wrong*****if its possible
20k huh 
ever had a stroker motor b4??
the piston rings on minis aaarrr mighty!!
what belts R u using??
ever had a stroker motor b4??
the piston rings on minis aaarrr mighty!!
what belts R u using??
Originally Posted by spillman
I had about 20,000 miles with the nitrous on. I don't think the 23% caused this. The added boost was fine it was just the overall cylinder pressure from the 75 shot with 20lbs of boost. I had several people tell me the max for stock pistons is around 250whp. I guess I just got lucky and it lasted this long.
My supercharger is still working awesome. But it does have a healthy appetite for belts.
My supercharger is still working awesome. But it does have a healthy appetite for belts.
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5th Gear
Joined: Nov 2004
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From: Rutherfordton, NC
Today's results were bad in ways but good in some. Cylinder #1 is missing a ring land and #3 is almost gone. The head is fine and so are the valves.
Since the stroker kit hasn't been released yet I am just going with the company's 650hp pistons and their 8000rpm head with a big freakin cam. If you don't know what company I am talking about then just look out for a carbon fiber MINI in the high 9's or low 10's this weekend.
Since the stroker kit hasn't been released yet I am just going with the company's 650hp pistons and their 8000rpm head with a big freakin cam. If you don't know what company I am talking about then just look out for a carbon fiber MINI in the high 9's or low 10's this weekend.
4th Gear
Joined: Mar 2005
Posts: 429
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From: Newcastle, England, UK
Originally Posted by spillman
Today's results were bad in ways but good in some. Cylinder #1 is missing a ring land and #3 is almost gone. The head is fine and so are the valves.
Since the stroker kit hasn't been released yet I am just going with the company's 650hp pistons and their 8000rpm head with a big freakin cam. If you don't know what company I am talking about then just look out for a carbon fiber MINI in the high 9's or low 10's this weekend.
Since the stroker kit hasn't been released yet I am just going with the company's 650hp pistons and their 8000rpm head with a big freakin cam. If you don't know what company I am talking about then just look out for a carbon fiber MINI in the high 9's or low 10's this weekend.
6th Gear
Joined: Aug 2002
Posts: 2,253
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From: NY NY
yours is the fourth I have heard of that has lost a piston land; Hubie, El, Maxiumus, all pushing 250+whp. As expected, seems like the weak link when pushing combustion pressure and temps.
Last edited by jlm; Oct 6, 2005 at 04:14 AM.
6th Gear
Joined: Apr 2004
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From: ann arbor michigan
Yeah if anyone is considering a twincharged car, i would suggest upgrading pistons and rods. There are a couple sources for pistons and i know crower makes a nice forged rod for the MINI. Better to do it now then have something blow up and possibly cause other damages later.
Ben
Ben
6th Gear
Joined: Oct 2002
Posts: 4,831
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From: Phoenix, AZ
Originally Posted by spillman
Well guys I think it may just be a burnt valve. I did a comp test today and I saw 50psi. I can't wait to pull the head off this weekend. The moment of truth awaits!
6th Gear
Joined: Oct 2002
Posts: 4,831
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From: Phoenix, AZ
Originally Posted by Tuls
with the right tools...
...lemme know we can do it...but it is most accuarate when the car is cool
...lemme know we can do it...but it is most accuarate when the car is cool Can you explain the process and tools needed to do something like this with the MINI?
Turbius Maximus
Joined: Mar 2004
Posts: 4,416
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From: Infinity and beyond
Originally Posted by dominicminicoopers
Anytime. I'd like to get it checked sooner than later.
Can you explain the process and tools needed to do something like this with the MINI?
Can you explain the process and tools needed to do something like this with the MINI?
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5th Gear
Joined: Nov 2004
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From: Rutherfordton, NC
If you are not running more then 400whp rods are not needed. Only pistons will do just fine.
I am not sure what size jets I am runing I will have to look it up. I am tapped into my test port on my fuel rail, so the pressure is just whatever the stock FPR is set at.
I am not sure what size jets I am runing I will have to look it up. I am tapped into my test port on my fuel rail, so the pressure is just whatever the stock FPR is set at.