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Topic: Modify the 2.0l 8v or go 2.0l 16v (Read 54 times) previous topic - next topic

Modify the 2.0l 8v or go 2.0l 16v

I currently have a 2.0l 8v fitted in my 87 k-jet wit a mild cam,what are your thoughts of going big valve head,cam four branch manifold ect of even bored out? Or would it be more cost effective to go 2.0l 16v (abf bottom and kr head)?

Re: Modify the 2.0l 8v or go 2.0l 16v

Reply #1
What are you not happy with?

What do you want from the car?

Its swings and roundabouts really, firstly dont waste your money on a 4 branch, they literally just add noise, the standard 4-2-1 system is more than enough for 200horses.

You could overbore your 8v or get a 16v 2ltr but bear in mind they 100% will need a rebuild, my 9a 16v ive just got in to rebuild needs an +0.5mm overbore and new pistons and there is zero oversize old stock pistons available so theres the best part of 700 quid on pistons alone plus the crank needs a polish and all the new bearings, seals etc.

My other 16v ive done overbore to 1900cc full rebuild with head work and parts alone just topped 2k.

Have you had the current set up properly turned by the likes of vince at stealth? Just a rolling road set up could wake up the current 8v a lot.



Re: Modify the 2.0l 8v or go 2.0l 16v

Reply #2
Y
What are you not happy with?

What do you want from the car?

Its swings and roundabouts really, firstly dont waste your money on a 4 branch, they literally just add noise, the standard 4-2-1 system is more than enough for 200horses.

You could overbore your 8v or get a 16v 2ltr but bear in mind they 100% will need a rebuild, my 9a 16v ive just got in to rebuild needs an +0.5mm overbore and new pistons and there is zero oversize old stock pistons available so theres the best part of 700 quid on pistons alone plus the crank needs a polish and all the new bearings, seals etc.

My other 16v ive done overbore to 1900cc full rebuild with head work and parts alone just topped 2k.

Have you had the current set up properly turned by the likes of vince at stealth? Just a rolling road set up could wake up the current 8v a lot.



yes It was tuned but a while ago now, it probably needs took a part and checked then retuned on a rolling road i just wanted more power/torque so thought about the big valve head on my 2.0l block.

Re: Modify the 2.0l 8v or go 2.0l 16v

Reply #3
I had a big valve head on my old 2ltr 8v with 285 cam that did 135bhp and 136lbft and really shifted. Though that was a PB digi so you'd get a few more horses out of the k-jet and to be honest the 285 cam was to all or nothing.

The head was done by race power motorsport but i doubt their still trading, i think it was only beneficial to enlarge the inlet valves.

Re: Modify the 2.0l 8v or go 2.0l 16v

Reply #4
So did you have your head modified as I’ve seen companies like tsr ect sell big valve heads

Re: Modify the 2.0l 8v or go 2.0l 16v

Reply #5
Yes i sent my head away to have it Reworked.

Best person to ask is Jason Moyle at JM Racing, best way to contact is via Facebook messenger, very busy and highly knowledgeable bloke.

Failing that you have Rob Cox Engineering who i had rework the 16v head on my 1900cc engine.

 

Re: Modify the 2.0l 8v or go 2.0l 16v

Reply #6
Ok thanks