SteveH

Clarkson reckons the Aston Martin DB7's engine was made by 'welding two mondeo engines together' and I was just watching old top gear with the Brabus roadster, when hammond says the V6 engine was made my welding two 3 cylinder engines together...

Serious question.. Is that really how its done? I've always wondered...

Steve

Rich_w

No.

But they may share conrods/pistons for ease of manufacture. (But I doubt it generally)

LHD220Turbo

iTrader: (4)

always wondered this myself; ive always assumed they cast the block together

xrsi

iTrader: (1)

no they are cast the same as any other block! could you imagion the stresses that the welds would have to deal with and also the fact that each weld on every engine would have to be spot on!

pa_sjo

It's a modular engine.. it's not welded together, but the per-cylinder design is similar.

nilrem

im sure it could/has been done (im sure top-boss welded 2 v6's together...), if you do 100% welds, but they are very time consuming and hard to achieve, so for a 1 off engine i cant see it being a big problem, but i would guess they had a different cast for the production model and similar components would make them almost identicle...



could be wrong though... would be interesting if anybody on here has attempted or thought about it...

saph4be

chuck a couple of yb's my way i'll give it a go

James

Hmmmmm V8 yb!?

cossie604

iTrader: (2)

I honestly didnt think people took Top Gear seriously as a factual program Its just entertainment...Clarkson knows fuck all about how an engine works, he's just a motoring journalist.

ECU Monitor Enthusiast

iTrader: (1)

I seem to remember about 4 years ago there was a spoof thread on hear about a V8 YB.
Nice photo shop picture... Nearly everyone fell for it !!! including me

SteveH

Well I dont take it as gospel, just wondered why he says it, what the relations were etc.

I'm sure it can be done, I remember reading a mag with a kit car that had 2 R1 engines made into a V8....

cossie604

iTrader: (2)

Not surprised tbh...you didnt even know what a cherry chap stick was until this evening..daft bugger

ECU Monitor Enthusiast

iTrader: (1)

LOL, old age and using PF for so many years has taken its toll on me

cossie604

iTrader: (2)

tbh the show lost alot of its 'fun' appeal with me when I was in the audience...when you've had to laugh at the same comedy 'passing' (scripted) comment for the sixth take, it starts to wear alittle thin

M.i.G.

i think, you can build a engine by bolting 2 engines together like this:

engine1 \ / engine2
crank1 O O crank 2
...........O.........
one bottom part with a shaft that connect the two crankshafts to the clutch...
all you have to do is to built the bottom part an make a program for a programable engine management.

greetings from austria!

NEO™ŽŠ

afpmsl!! i dont either!!

homer j

iTrader: (1)

take a look in practical performance car this month. it tells you all about W pattern/ H pattern engines. quite geeky but makes some very interesting reading.

regards

Tom

SteveH

I'll have to look at that, ive always wondered about W12s etc....

On a slightly different tangent, a mate of mine reckons the subaru boxer was so called because the pistons met each other in the middle... so the crankshafts (yes, two) were on the outer ends of the engine, where normal people find the camshafts

900ss

That’s a bit of a generous statement lol
He should at least know something about what he chats

Still I guess he knows a lot about sh1t then lol

pa_sjo

I was just going to point you to www.rst-v8.com - but the site appears to be down!

Nash_mr2

they are speaking metaphoricaly.

*Edited by stu and infraction given.*

Lee Reynolds

Was just about to say that(type that lol)

RS2000CUSTOM

What about the Metro 6R4 engine

A V8 Rover engine with the back 2 cylinders simply hacksawed off ! - lol

RS2000CUSTOM

http://thekneeslider.com/archives/20...usa-v8-engine/

Found a Hayabusa V8

dojj

iTrader: (3)

they flog 460 brake bike engines in the back of ppc for Ł15k if you want that sort of thing

tabetha

It's been done over 20 years ago, catch up.
Best one I ever saw was RD350LC enigine welded to another, to make obviously a 4 cylinder 700cc 2 stroke, a magazine did it as a spoof, but it backfired as a guy then lent them his bike on which he had done the very same!!
I think(not sure) Nick Croom had hand in it as well, formerly of SS 2 stroke fame.
It has also been done with a Z1300 six as well.
tabetha

Turbocabbie

One 'Hack' engine was only made for the test car and never made it into the final cars which ran a 3 litre Austin Rover V64V, designed by ex-Cosworth employee David Wood, this was a 90 degree V6 with 4 valves per cylinder (hence V64V), with belt-driven twin-overhead camshafts per bank producing either 250bhp in 'Clubman' form or 380/410bhp in 'International' tune. It was (and possibly still is?) the first ever engine designed specifically for rallying - most other manufacturers continue to rely on a modified production block and cylinder head.

dunketh

Not a new idea at all.

I believe it was triumph who welded two together to make a V8, back in the Stag/GT6 days.

At least that was always the rumour.

dojj

iTrader: (3)

and look how well those engiens were put together

dunketh

lol..

Yup, "replace asap with rover v8" should be the first line of the handbook.

Still, makes you proud to be british. Nobody bodges like we do.

GARETH T

Karl and seans windup on the V8 YB was one of the best threads ever LOL

Mr C

iTrader: (2)

correct Steve, it was done using R1 heads and internals though a custom V block was cast to house the 8Cyl crank, it was a brilliant idea and sounded like an F1 engine revvy as hell!!!, I havent seen a kit finished though, I forget the name, they may have gone bust after designing the new engine and some of the styling wasnt as per Dax or caterham levels of looks

doctor stavros

surely the phrase 'two engines welded together' would merely imply that the cast was taken off a real 'welded' 1 off, thus giving a re-maufacturable mouldd to produce the bottom end from