Engine
Author
Discussion

atom290

Original Poster:

1,015 posts

286 months

Tuesday 19th April 2005
quotequote all
Would the V6 out of the Audi RS4 be a good choice?

500bhp more than possible

peterpsg

813 posts

263 months

Tuesday 19th April 2005
quotequote all
I'm giving serious thought to an 1uzfe from a Lexus...

4.0 Litre, 32 valve, all alloy, 6 bolt mains, factory forged crank and rods - and I just picked a complete running engine back home in NZ for £450, at that price, it's worth having a play... even if it just ends up in a jetboat :-)

You can get forged pistons, race cams and various other ancillaries for it... thought, since it was the first V8 Toyota made, they went for a little over engineering... so they are very solid engines...

I think from factory - with no mods at all, they come in at a conservative 260ish bhp, but of course, once a pair of turbos or a blower is hooked up, or some porting done...

They are becomming a very popular conversion engine in Aussie and NZ... you can even get an emissions kit for one from Australia... as well as one with an Eaton hooked up...

Pete

ultimasimon

9,646 posts

287 months

Tuesday 19th April 2005
quotequote all
Hi John. Thought exactly the same being as I was offered an 18 month old RS6 engine and ancilleries for just £3.5k, having only covered 18,000 miles. The problem is cost of tuning to take it from 460bhp upto 550 and above.

To get near the 600hp you would have to spend around £25k from one of the reputable Audi tuning firms and you can buy a twin turbo SBC producing 1200hp for around £13k.

See thread on the Engine forum I posted two months ago here

The only other viable alternative IMO is the Lexus V8 as mentioned above. You will also see a thread about this mentioned on the Engines forum, do a search for 6 months ago with Audi RS6 or Lexus V8.

What that leaves us with is the good ol' SB Chevy as nothing else £ for ft/lb comes close other than the Luxus

edited to win the war against hyperlinking

>> Edited by ultimasimon on Tuesday 19th April 17:31

gtrclive

4,193 posts

312 months

Tuesday 19th April 2005
quotequote all
atom290 said:
Would the V6 out of the Audi RS4 be a good choice?

500bhp more than possible


Isn't it a V8 ?

atom290

Original Poster:

1,015 posts

286 months

Tuesday 19th April 2005
quotequote all
I can see where you are coming from, but I dont want the weight of the chevy engine, so the Audi being all Alloy seems a good, if not great, alternative.

The engine you are refering to is the RS6, and it cant be mated with a manual box on the cheap. That is the V8 which I do agree would be nice, but very expensive.

£5-6k will buy the engine from an RS4, £8k to get the bhp to 500. Using the motec ecu which means I can run the dash too

A lot less weight, and still as built proof

uncle_git

15 posts

276 months

Tuesday 19th April 2005
quotequote all
Maybe the new LS7 is what you are after then - all alloy block - dry sump, 500 bhp 500 ft/lbs.

At 28mpg ish it's economical as well - unless you are flogging it

Big V8 sound as well...

What's not to like ?

atom290

Original Poster:

1,015 posts

286 months

Tuesday 19th April 2005
quotequote all
uncle_git said:
At 28mpg ish it's economical as well - unless you are flogging it


Why does the economy get worse when you come to sell it?

atom290

Original Poster:

1,015 posts

286 months

Tuesday 19th April 2005
quotequote all
OK having read up on the LS7, it looks as though it has loads of potential.

There is a blower already in the making, so I think we will go for this little baby.

Plus I do like the red rocker covers

kevinday

13,832 posts

309 months

Wednesday 20th April 2005
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Don't forget the age of the engine issue as regards emissions etc. I believe that this is the reason many Ultima builders use the LS1 engine.

G Man

4,053 posts

289 months

Wednesday 20th April 2005
quotequote all
The ls1 engine also causes an emission (catalyst) issue. I helped design the factory 18 degree exhaust, which can have cats inserted into the back box ....

G Man

Ffirg 005

2,013 posts

280 months

Thursday 21st April 2005
quotequote all
uncle_git said:
Maybe the new LS7...

{snip}

What's not to like ?


The price?

No-one knows what it will be yet but with the quality of components and all hand-built the basic crate engine will surely be a LOT more than the LS6 at ~$7k