Aternative TVR related project.
Aternative TVR related project.
Author
Discussion

haircutmike

Original Poster:

22,459 posts

233 months

Wednesday 18th July 2012
quotequote all
I am considering buying my old 4.0 RV8 engined Disco back that I sold 6 years ago.
It's generally in good condition but has probably got a dropped liner as it's overheating, hence very reasonable price.

It's also converted to sequential LPG.

Plan is, replace the block with a top hated 5.0 that I have, fit a Typhoon or similar mildish cam, ported heads but retain all the petrol and gas fueling.

This model runs GEMS so I assume ECU wise all will be self adjusting and should run smoothly.

I have cam, followers, timing set and gaskets already so cost would be minimal.

Is this doable, am I missing something.

Alexdaredevilz

5,697 posts

208 months

Wednesday 18th July 2012
quotequote all
[quote=haircutmike
Is this doable, am I missing something.
[/quote]

Yes, you already spent enough phissing about with rover v8's on the tvr

haircutmike

Original Poster:

22,459 posts

233 months

Wednesday 18th July 2012
quotequote all
What can go wrong.................?

Alexdaredevilz

5,697 posts

208 months

Wednesday 18th July 2012
quotequote all
haircutmike said:
What can go wrong.................?
Where do I start?

haircutmike

Original Poster:

22,459 posts

233 months

Wednesday 18th July 2012
quotequote all
whistle

Bassfiend

5,530 posts

279 months

Wednesday 18th July 2012
quotequote all
haircutmike said:
What can go wrong.................?
Oddly I've always associated that question with someone very shortly afterwards losing at least an eyebrow...

Phil

Quietlybonkers

22,444 posts

173 months

Thursday 19th July 2012
quotequote all
I too wondered about LPG converting an RV8 Chim.......doing something for the environment? Question is, where do you put the roof when the gas tank is in the boot? LPG getting a lot cheaper hereabouts. Not that I bought a TVR for fuel economy.....confused

haircutmike

Original Poster:

22,459 posts

233 months

Thursday 19th July 2012
quotequote all
A split roof would be the answer.

Gazzab

21,627 posts

311 months

Thursday 19th July 2012
quotequote all
Get rid of the LPG if you want to avoid engine melt down? My friend runs an indie LR place and wouldnt touch the stuff. He gets a lot of work rebuilding LPG LR's.

ChimpofDarkness

9,637 posts

208 months

Thursday 19th July 2012
quotequote all
Go for it Peter, plenty of Discos & RR's about that have 100,000 trouble free LPG miles under their belts.

Actually LPG is better for an engine than petrol in many respects.

Sure, you need to take care of your valves; but no bore wash and a much cleaner combustion process mean your rings last longer & your oil remains effective for longer.

Drop the oil from any LPG engine and you'll see what I mean, strip the engine and you'll find it clean as a whistle.

Gas is the future, you just need to deliver it correctly & get the ignition side right, then it's a perfectly safe fuel.

The problems come with the multitude of lashed up conversions done on a budget by people that don't have the skills or knowledge to do it properly.

These same self appointed experts typically finish off their handiwork by mapping the LPG side badly too.

The result of such a conversion is at best something that doesn't drive very nicely, and at worst can mean good night Vienna for your engine.

But you can achieve all that on petrol too if you don't now what your doing.

A good conversion starts with thorough planning & design, you then need to select quality LPG components that suit the application, finally it should end in some very careful mapping by someone who understands the unique requirements of LPG and the engine they are working with.

Get all this right and it's a safe clean burning fuel that will deliver equal performance to petrol but at virtually half the cost.

Get it bought Peter wink

haircutmike

Original Poster:

22,459 posts

233 months

Thursday 19th July 2012
quotequote all
I had the sequential system fitted by RPI some years ago and it's done 60K trouble free smiles!

ChimpofDarkness

9,637 posts

208 months

Thursday 19th July 2012
quotequote all
haircutmike said:
I had the sequential system fitted by RPI some years ago and it's done 60K trouble free smiles!
There you go Peter, you've answered your own question.

We really are both a couple of old gas bags, aren't we laugh

topsparks

1,202 posts

276 months

Thursday 19th July 2012
quotequote all
Been there and done it,5 litre top hatted runs fine on Lpg,pinks a bit on petrol as its running quite a high compression,running the standard Thor system,headers with no cats and no centre box.

haircutmike

Original Poster:

22,459 posts

233 months

Thursday 19th July 2012
quotequote all
That sounds great, what I'm aiming for!