4.3 RV8 14CUX management.

[GibsonTD]

Hi Guys.

Wondered if with all the encyclopedic knowledge on here anyone would know the answer to this question. I have a 4.3 RV8 lump which is actually in a different car but thats irrelevant for now. when i purchased the engine it didnt come with an ECU or wiring loom and i need to know if i can rob a loom from a 3.9 range rover that uses the same hotwire 14cux ECU. Then the ecu, could i get one from a range rover and just put a tvr chip in it? TVR ones appear to go for mega monies.

[Number 7]

If you're starting from scratch, why not go the aftermarket ecu route? There are several to choose from now. You'll get mapable ignition, and it will be easier to tweak when making changes the engine.

7.

[GibsonTD]

Im just looking for the cheapest way to make it run for now to be honest, i picked it up cheap and its in a drift car so i dont wanna spend mega money on something when i stand a reasonable chance of blowing the engine up at some point anyway...... it doesnt have to be mapped for smoothness or fuel economy or anything just the most power i can get out of it....

[900T-R]

Yep, get the hotwire 14 CUX set up from any Range Rover with this equipment as that's where the ECU and loom came from, then get the correct Eprom for the 4.3. If it's a catalyst map you need, I might be able to help...

[GibsonTD]

I *think* the tvr had cats on it originally because i have the exhaust from it but it would appear they have been deleted and replace with straight through pipe.... so i dont have a clue what i need...

[900T-R]

Does it run lambda sensors? If so, you need the catalyst map. The 'other' map on the eprom from my car (you can swap between catalyst and non-catalyst maps by swapping tune resistors n the CUX14) wouldn't be of any use as it's very likely to be the std Range Rover map...

Edited by 900T-R on Saturday 25th September 16:49

[SILICONE KID]

Stick a carb on

[GibsonTD]

Yea it has Lambdas so of course it must be cat. Sorry wasnt thinking. Cant be bothered with carbs i dont get on with them at all but the thought had crossed my mind....

[cookie450]

Don't you need to make sure the range rover ECU has the correct plug in interface for the EPROM. From memory the early ones were directly soldered onto the main board ?

[blitzracing]

The 14CUX only comes in 2 basic sorts circuit board wise, changing around 1991, so any ECU from 1992 onwards will take the TVR catalyst chip, although as mensioned the early ones (around 92- 93) dont have pluggable Eprom sockets, so the old chip has to be cut out and a socket fitted. Apart from that just put the correct chip and tune resistor in and away you go. I have both ECU's and chips at not so "TVR" prices if you need. Drop me a mail if you are interested.

Mark

[900T-R]

Ahh yes, I seem to vaguely remember something like that...

[GibsonTD]

I cant email you yet because i havn't been a member long enough but i am looking for a rangey ECU, chip, and loom.

[blitzracing]

Oh boy ....and you guys say Im a luddite!!

[spend]

OP you need to re-title this post Old Farts Corner

Are you sure its a 430 rather than just a LR 4.2, from the ECU's point of view they are fairly different (heads, CR, cam..)

[GibsonTD]

Says 430 on it. has TVR manifold, TVR rocker covers, TVR coolant reservoir etc... Im pretty sure.

Here is a build pic from my little project.



And no im not putting carbs on it, i dont get on with carbs. and the last thing i want it SU's they are fecking orrible things IMHO...

[900T-R]

Indeed - if that's a LR engine, someone gone to pretty extreme lengths to disguise it...

Edited by 900T-R on Sunday 26th September 15:10

[spend]

Wouldn't have been the first to have tried to get 5 litre performance by upgrading a LR engine with a TVR500BV ecu chip

Seriously the plenum badges are 10 a penny, but that has got the right bits for a TVR 430.

[GibsonTD]

Purchased it from a friend of a freind so it wasnt just a random purchase off the internet. Well thanks to blitz it looks like i may have this lot all sorted.

except a loom, anyone got a hotwire loom knocking around?

[GibsonTD]

Blitz, i will get back to you as soon as i get paid to get that ECU on its way here, but its still useless to me without a loom!

[v8 racing]

The scary thing is all the 4.3's i have come across have been fitted with bv heads and some had cosworth pistons, such a shame to just blow it up!!