Cardie

Hello

Ive got a MK2 fiesta with a ...

1.8 ZVH (RS1600i lean burn head)
Newman fast road Cam with solid Lifters
Lightend flywheel
2 Weber DCNF 40s
Uprated headgasket
Vernier Pulleys

Looking down the spark plug holes the piston crowns have valve grooves in them, far as I know the standard zetec pistons are just flat? If so what pistons do I have?

What would be the maximum rev limit? As the car has no rev limiter, I'l be fitting a rev counter next week

I was thinking about 6000rpm ?

Thanks

Rick

6k is about right

zippyobrien

iTrader: (2)

Used to rev my Rs 1800 to 8k lol. Only had arp bolts.

Rs1600 head has solid litters so would have thought it would rev nicely to 7k x

Cardie

Whats the standard rev limit for an 1800 zetec?

And for a standard CVH? Both 6K arent they?

zippyobrien

iTrader: (2)

Standard rev limit on 1800 zetec is 7k or 7.2 k depending on with it's a high output model.

Ben26

How big are your balls ?

PhilCook

iTrader: (1)

And your wallet

zippyobrien

iTrader: (2)

Like I said. 7k wil be fine. Depends on your cam aswell, what rpm range it's designed for

Cardie

If it makes any differnce it runs rough as a grizzlys arse about 1500 to 2000, about 4000 the engine note changes and pulls really hard!

xr2wishy

iTrader: (2)

go off the abilities of the bottom end, so i'd say 7k, whack ARP's on for safety though.
zetec rods seem to be better than cvh's ones, or at least that's the rumour on the street.
i ran a zvh turbo and put limit at 6800, didn't bend a rod in three years, no ARP's either.