Tuned CVH or ZVH

[Spiike]

Got a 1989 reliant scimitar SS1 1.6cvh, currently with bike carbs and a powerflow exhaust, anybody got any ideas about what would be the best next step? Further tuning the CVH or moving up to a ZVH?

[anonymous-user]

If your gonna spend some money, then why not just stick in a 2.0 Duratec. Cheap, modern, easy power.

[Spiike]

Trying to keep the same engine mounts and no major electronics

[MG CHRIS]

Try this very good article might do a couple of things mentioned on my cvh in my kit car

http://www.bing.com/aff?p=JVHLjqMwEDzzF1zmSrB5r7Ra...

[Pumaracing]

Stick a 2 litre solid lifter Zetec in it. With DCOEs and a decent exhaust you'll be close to 175 bhp for a lot less money than trying to get 140 bhp out of a CVH or a bit more out of a ZVH. The extra capacity of a ZVH makes little difference to the power and the extra cost is huge. It's airflow that determines power not capacity.

[Spiike]

Im only 19 so i haven't really had time to do much with engines, only done some mild modifications to the cvh. How hard would it be to reposition the engine mounts? And what have you an idea of the price for a zetec with those modifications?

Thanks

[anonymous-user]

I would immagine the engine mount move would not be too much trouble tbh. I have no idea what the cross member and sump layout of your existing engine are, but i suspect swapping to a zetec is not going to be too much of a tear up ;-)

[Spiike]

Think the zetec sounds like the way to go, I'll have a look around and see if anyone has fitted one into an ss1

[Pumaracing]

Spiike said:

Trying to keep the same engine mounts and no major electronics

Since you originally asked about swapping to a ZVH I take it you do actually realise a ZVH is a Zetec block with a CVH head and the engine mounts are on the block so you'd have to adapt the car to those whether you used a ZVH or the whole Zetec engine?

Seems to be a curious plan if you're concerned about engine mounts to think about taking a perfectly good Zetec with a 16v head capable of well over 200 bhp, throwing that head away, spending a small fortune adapting the bottom end to take a lower powered and much less reliable 8v head and then still having to do the engine mounts and clutch mods anyway.

Anyhoo, mine not to reason why.

[Spiike]

I had read before that the zvh uses the same engine mounts as the cvh or there was very minimal changes, it may be the same for the zetec

[tr7v8]

The SS1 engine bay is very tight, not sure you'd get any sort of DOHC in there. The go faster version used the Sylvia turbo lump for this reason.

[CNHSS1]

zetec on webcon and carbs has been done in an SS1, as has Vauxhall 2L XE.
twin cam turbo nissans are popular too. Engine bays not tight everywhere, just drivers side bulkhead where the brake servo is. Luckily being GRP, chop a section out and glass up hole!

http://www.ss1turbo.co.uk/zetectop.htm
http://www.ss1turbo.co.uk/paulhunt.htm
http://www.ss1turbo.co.uk/petesilcock.htm

Rover K series were fitted to later Sabre (same chassis as galv SS1s)

if you feel worried about a different engine, modify a CVH. I hillclimbed one with a 'tallblock' 1900cc CVH, rally spec cam, bit of head work and 34DMTL carb, about 130hp and probably 700-800 quid if ebay purchased. bolts in zero hassle and good fun in an ss1.






dont try and reinvent the wheel.

if you want more power just buy an SS1 Turbo. Nissan 135hp turbo motor as std, many are sprinted with more boost (10-12psi) add an intercooler, remove blow off valve and set up on rollling road, and a genuine 175-185hp for about £250

Edited by CNHSS1 on Saturday 3rd September 13:14

Edited by CNHSS1 on Saturday 3rd September 13:21

Edited by CNHSS1 on Saturday 3rd September 13:23

[Spiike]

Think I'll go for a zetec, how about mating it to a 5 speed sierra gearbox?

[CNHSS1]

the ss1 1600 CVH cars use a sierra 5speed box anyway! read the links from Phil Howards site as posted above for details of the clutch/fly mods.
Phil is the scimitar club chairman by the way and all round good bloke

Edited by CNHSS1 on Sunday 4th September 09:37

[Spiike]

Yea i know, thats the gearbox in mine, just wondering if it will link up with a zetec, thanks for the info

[rb5er]

Spiike said:

Yea i know, thats the gearbox in mine, just wondering if it will link up with a zetec, thanks for the info

These days you will easily be able to get a 2.0zetec engine with gearbox attached very cheaply.

[Spiike]

I'd like to be able to just fit the zetec to the sierra gearbox if possible

[CNHSS1]

as i said read the link!

http://www.ss1turbo.co.uk/zetectop.htm


"Clutch and Gearbox

The std CVH gearbox will mate with the Zetec block, although there will be changes to the flywheel and clutch. The Zetec flywheel has larger holes for the crank bolts (11mm vs 10mm) than the CVH flywheel, plus you'll need the Zetec flywheel as it has the timing marks for the crank sensor built into the back of it! The 1.6/1.8 Zetec flywheel uses a standard Ford 220mm clutch and is also considerably lighter than the 2.0 one. This allows the usage of a standard or uprated RS Turbo clutch (if needed - the standard Zetec one can also be used). There are a couple of other things to note: The clutch release bearing needs swapping for one from a 1982-89 Ford Sierra 2.0 OHC (Quinton Hazell part CCT132) if using the 1.8 flywheel and clutch, the 2.0 Zetec one needs a standard 2.0 clutch and a clutch release bearing from a 1971-88 Ford Transit 2.4/2.5 diesel (Quinton Hazell part CCT303). You will also need the spigot bearing for the first motion shaft to run in; It comes from the 1.8 Sierra. The Ford part number is FINIS code 1554973, apparently.

The stock starter motor will no longer engage with the ring teeth, so either space it back (forwards!) from the bellhousing with some spacers, or you will need a starter motor from a Ford Sierra with a 1.8 CVH or 2.0 DOHC engine. The Lucas part for this is the LRS707."

theres also a further link if you read it...

[sawman]

thanks for the link, very helpful I have been considering an engine transplant in my cvh morgan, this is really useful info

[Spiike]

Yep, thanks for the links hopefully get started by Christmas