Im confused

Author
Discussion

R1 GTR

Original Poster:

2,152 posts

214 months

Friday 25th August 2006
quotequote all
Ok this is probably very simple but, what is the difference between a
1) In-line 6
2) Straight 6
3) Flat 6

V6 I know (who the hell doesnt?) but the others are really satrting to bug me.
Help please

Alex@POD

6,156 posts

216 months

Friday 25th August 2006
quotequote all
In-line and straight refer to the same thing, like in BMW. In a flat 6, there are two banks of 3 cylinders either side of the crankshaft, think of it as a 180° V6, flattened.

Trooper2

6,676 posts

232 months

Friday 25th August 2006
quotequote all
There is also (or was) a slant 6, maybe only in the U.S., it's an in-line 6 thats tilted to the side for a lower hood line and better CofG.

R1 GTR

Original Poster:

2,152 posts

214 months

Friday 25th August 2006
quotequote all
Alex@POD said:
In a flat 6, there are two banks of 3 cylinders either side of the crankshaft, think of it as a 180° V6, flattened.


Like a subaru boxer engine?

Trooper2

6,676 posts

232 months

Friday 25th August 2006
quotequote all
yes

R1 GTR

Original Poster:

2,152 posts

214 months

Friday 25th August 2006
quotequote all
Cheers guys

wildoliver

8,788 posts

217 months

Saturday 26th August 2006
quotequote all
inline refers to the orientation of the engine, inline it points down the car, transverse across.

straight means the pots are all in a long line.

V means 2 banks of pots in a v formation.

Flat is like a v engine opened up so the pots are opposite each other.

A slant is a straight engine (usually can be a v but not normally referred to as a slant then) slanted in the engine bay, i.e. tilted over, usually to fit a tall engine in to a low engine bay. The lotus 2.2 is usually slanted and the porsche 924 engine too.

There are also W engines which are a variation on a v.

And H engines which are basically 2 flat engines mounted over each other with a link beween cranks

Xaero

4,060 posts

216 months

Saturday 26th August 2006
quotequote all
Another name for it is a boxer engine, same as a Impreza or Boxster.

Sam_68

9,939 posts

246 months

Saturday 26th August 2006
quotequote all
wildoliver said:
inline refers to the orientation of the engine, inline it points down the car, transverse across.


Not necessarily. 'Inline' is usually used to simply mean the cylinders are all in a row, rather than a vee or boxer configuration.

To avoid confusion, the terms transverse and longitudinal should be used to denote the installation arrangement.

clarenceboddiger

1,398 posts

216 months

Sunday 3rd September 2006
quotequote all
I think some slant engines were derived from half a V8,such as the late 60s to mid 70s vauxhall engines.

leorest

2,346 posts

240 months

Sunday 3rd September 2006
quotequote all
X1/9 = transverse slant four.
Chevette HS & HSR longitudinal slant four.