GTE Speculation

[Slipknot]

Is there a cylinder limit in GTE or is a 5.5L V10 or V12 allowed?

[Victor_RO]

Originally Posted by Slipknot

Is there a cylinder limit in GTE or is a 5.5L V10 or V12 allowed?

No, you can put a 4-stroke engine with any number of cylinders under the bonnet provided it is under 5.5 liters (unless you are SRT ).

[MitchZ06]

My bad, I was of the impression the regs only allowed 8 cylinders max but I may have had my wires crossed with the LMP regs...

[Duff_44]

You can't just drop any engine into a GTE. It has to be available in the road car at a minimum of 100 units and a 9:1 road car:race car ratio (or permanent factory setup to build that many, which makes the Viper legal).

This is the rule that's befouling the BMW Z4 GT3 from being used in GTE. BMW doesn't build a V8 street version of the Z4.

There are some rules governing engine components as well. Block needs to be original, but can be machined to re-bore/re-stroke/add sleeves, etc (which makes a 5.5L Corvette legal based on the 6.2L LS3/LS9). Heads, valve angles, # and location of camshafts must remain original. So no DOHC LS engines coming down any time soon.

But there is no limit on number of cylinders, as long as it's available in the road car.

Any engine swapping was covered under the old IMSA-only GTS2 rulebook for "sports sedans" which that stillborn Lexus IS project was built to. You could swap out any engine from the same manufacturer but there was an 8cyl limit, and it was basically covered under the same modification rules.

[The Badger]

Whats a "sedan" ..... I ask cuz we dont use that name in Europe .

[tux]

A sedan is a saloon car. So like a Mondeo or an A4.

[Articus]

Well in following the ACO's trending of flying elephants through the rule book they could just change the wording and say the engine must be "In Production" or "Production Ready"

[MitchZ06]

I'd say ditch the capacity limit and word it as 'engines produced in x amount by manufacturer'. Problem solvered boss.

[The Badger]

Originally Posted by tux

A sedan is a saloon car. So like a Mondeo or an A4.

Cheers

[Duff_44]

Originally Posted by MitchZ06

I'd say ditch the capacity limit and word it as 'engines produced in x amount by manufacturer'. Problem solvered boss.

I know Belcar used to have a rule along the lines of: if it fits in the stock engine bay, and it's from the same manufacturer, engine swaps are free. So there were 5L V8 BMW Z3's, some V8 Audi TT's, and IIRC one team ran an M3-powered (straight 6) Mini.

That could present some interesting possibilities...

[MitchZ06]

I've heard that with minimal fuss the Fezza V12 fits in the F458...

[hondafan37]

Originally Posted by MitchZ06

I've heard that with minimal fuss the Fezza V12 fits in the F458...

I would like to see a Ferrari 458 V12

[Articus]

I like the V8.International Performance engine of the year two years running.

[TF110]

No current V12 is under 5.5 liters, unless they get a waiver, maybe Arakis would stop complaining about BOP for the other cars! I kid...

[Victor_RO]

Originally Posted by MitchZ06

I've heard that with minimal fuss the Fezza V12 fits in the F458...

A Ferrari client which will remain nameless (ahem... British, famous guitarist) actually commissioned from Ferrari themselves a 458 with a V12 engine and a different body shell. And they did build it.

[MitchZ06]

The SP12-EC doesn't have the V12.

[TF110]

Saw that, Eric Clapton's SP12 EC

[Dead-Eye]

http://www.telegraph.co.uk/motoring/...c-Clapton.html

It still has the V8. Unless Victor is talking about a different British guitarist .

[Victor_RO]

Originally Posted by Dead-Eye

http://www.telegraph.co.uk/motoring/...c-Clapton.html

It still has the V8. Unless Victor is talking about a different British guitarist .

The initial rumour was that it was going to have the V12, and I didn't hear anything else afterwards. So it seems I was wrong.

[TF110]

Ferrari isn't my forte, I just showed a picture. Could care less what engine he has in that overpriced thing... $4.5 million? wow

[Nick6]

Originally Posted by Victor_RO

No, you can put a 4-stroke engine with any number of cylinders under the bonnet provided it is under 5.5 liters (unless you are SRT ).

I'm sure the ACO would be more than willing to offer a waiver to a 2 stroke engine.

[Victor_RO]

Originally Posted by Nick6

I'm sure the ACO would be more than willing to offer a waiver to a 2 stroke engine.

Quick, someone buy SAAB and initiate a two-stroke resurgence!

[Peterdr]

I Regulations are written by people, people make mistakes, mistakes that can often only be highlighted when cars hit the track.

In addition if you want every wonderful shape and engine combination, don't be surprised cars need specific waivers to make them competitive or compliant.

Would you ban the 458 because it was too wide, the Mclaren because its a carbon chassis, the Viper because it's unrealistic to get the V10 down to 5.5? If you want a representative GT field you have make compromises, the alternative doesn't bear thinking about, either silhouettes or only allowing certain drive trains, I. E front engined rwd.

[aneesh99]

Originally Posted by Peterdr

Would you ban the 458 because it was too wide, the Mclaren because its a carbon chassis, the Viper because it's unrealistic to get the V10 down to 5.5? If you want a representative GT field you have make compromises, the alternative doesn't bear thinking about, either silhouettes or only allowing certain drive trains, I. E front engined rwd.

On the money. Cars that died in before the advent of GTE that are making a resurgence need to fall into some category, I wouldn't want the Viper turned away on the basis of displacement provided it can be balanced correctly.

[FstrthnU]

www.worldcarfans.com/112082147444/bmw-working-on-an-m-performance-z4---report

Well, BMW has renamed the Z4 sDrive 35is as the Z4 M35i Performance (which is a TAD better name I suppose), but still no sign of a V8 Z4...