hi,

need some help on chosing power plant fo my rs s2 not sure wot i would need,

so collecting parts to give to my engine builder, if i want for zvh what has the better block silver or black top, a list of parts would be really helpful.


thanks in advance
lee

 

Your engine builder/tuner should be able to give you the correct parts list for what he intends to do?

 

see thats the problem he works for vauxhall so kinda a gray area for him, but tbh was gonna try and do as much of it myself if i need any help ill ask some1


thanks

 

I would stay with the CVH if your planing to do a DIY build

It will be worse and will not rev beyond 5k if not built properly

Better to focus on the head ,cam, turbo, and management on the CVH

 

i see on ebay some1 selling complete zvh bottom end im sure he makes them up as there always on there, was thinking about buying that and working from there.

 

there was a big thread on this about cvh,zvh and zetec turbo might wanna try and find it mate, zvh isnt revvy whereas the cvh is

 

im very happy with our zvh puts out good power

 

just looking for that thread now,
thanks

 

cvh steel bottom end .stg 3 head with solid lifters.kent cam and steel pulley. stg 2 turbo. exhaust.. frount mount. good set up....

if anyyone has this setup do tell heard its very good

 

here you go m8
https://passionford.com/forum/showth...&highlight=zvh

i think thats it lol

 

bin reading some of the threads and the zvh do get slated to death, wanna do it right the first time round so looking towards zetec turbo, dont massive bhp but do want relibilty (sp) time aint an issue either being that im reshelling my old rst kinda want something to put money into instead of pissing it up the wall every weekend

 

Given what you have written, I would rather have a reliable full steel CVH personally.
A good CVH with decent management makes for a very nice little engine imho

I would not do a zetec unless I massive power was needed and wished to change the gearbox to something better.

 

gearbox is being changed to smething stronger, like i said in last post i want around the 240 mark on bhp and reliabilty.

cheers
lee

 

I have a CVH doing that kind of power reliably and would not personally change it for a Zetec of similar power.

 

A steel CVH would be ultra reliable there's nothing you could break

The thing that kills most CVH's is the shonky MFi management

 

Yeah i'd either go CVH or full Zetec no point doing half in half (ZVH) IMO.

 

how would i go about doing an all steel cvh then, had problems with mfi before so would opt for efi.

thanks

 

Building a CVH these days is a bit odd unless you have a specific reason for wanting one.. A 2L zetec with nothing more than a set of pistons and uprated valve springs will quite happily sit at 250bhp all day (metaphorically speaking) and not wear like a CVH would!

 

What it means is that you need new uprated rods and forged pistons I think the crank is good for almost 300bhp.
Sure someone will put me right if i'm wrong though!

 

Zetec, although I do like big spec's CVH's, but they come with big money sadly.

 

if changing to efi anyway i would go full zetec less money than a (all steel) cvh and certanly less stress on it. i done a zvh as i never wanted to change my management and had no probs with it, producing good power and revving well CERTAINLY not as bad as what people say.

 

zvh mate. Much cheaper to build on your own. Ive built quite a few now and had no problems with them what so ever, hand on heart!!!!! Built the zetec turbo a couple of times, a lot of money and a lot of aggro. From my experience the zvh pulls and performs much better. And i use something a lot of people dont agree with, a very well made decompression plate. Spec of my engine, mk1 mondeo bottom end, shot pinned rods arp bolts, standard pistons, over the top ported and polished head plus inlet manifold piper cam modified by race power motor sport, stage 3 t3, big intercooler and still running mfi system with a 250 break ECU. Had it on race powers rollers and set up at a bar and made 240 and matching torque. AP clutch and standard gearbox. Engine been running for well over 15 months with abuse on track days.