How easy and fast is a 340i?

[Phill172]

No x5 don't bolt on, mine were hacked up a fair bit.
Steering column in the way and starter motor in the way on the other side

I think the manifolds from ergen are £800, id buy them every single time over trying to source the manifolds needed and how restrictive they are. Plus it then makes the conversion pretty straight forward

See photo, don't forget the internal of the pipe is even smaller as these have the double skin pipe

[Jon_Bmw]

The ergen ones are still pressure bent though which is a shame. Still better than those x5 ones

[Phill172]

Pretty much most of the v8 stock manifolds are bad and a good exhaust (from what I have seen) give really good power gains

[E30BeemerLad]

If I went V8 it would be in something like a 4dr facelift in pretty plain attire and I'd keep it auto.

[leeparkes]

What does a M60 do a quarter mile in?

[HairyScreech]

The M6x is a brilliant engine its just the lack of manual boxes that screws fitting one to more things.

Spent a while looking to make a converter to take a ZF or supra box but nothing much happened with it as the other party lost interest.

[Phill172]

If you have ideas even cad files I can put you in touch with an affordable and bloody decent machinist.
I know the chap with the m60 Capri used a transit gearbox...

[GB69]

The standard m60 manifolds were butchered on mine to fit the e30. Pics in my build thread. It was 301bhp when dynoed on the e34 540, on the e30 with butchered manifolds it made 284bhp. Torque was increased on the e30 tho, with the extra restriction increasing torque but lower bhp.

If you building a road/track car then I'd personally go M3 engine, only go v8 if you really want the v8 sound or going to drift it. Nothing really hard about putting a v8 in an e30, even the servo is easily mounted under glovebox.

[Phill172]

What were the torque figures for both?

[DanThe]

I cant imagine an M60/62 conversion being very good for 1/4 mile times TBH, I dont recall any decent times being posted up anyway, too much low down torque for such a light car, its not an engine you can rev for power either

[GB69]

What were the torque figures for both?

E34 540, torque about 290:-



E30 4.0 v8, torque 300:-

[capnmchl]

Those torque curves are lovely for a standard engine. The first one is the better out the two.

[pony]

Why is one producing more power but less torque than the other ????

[GB69]

Those torque curves are lovely for a standard engine. The first one is the better out the two.

Exact same engine, just need a better manifold doing on the e30 to get the bhp figure back up, but lose torque.

[BenHar]

Why is one producing more power but less torque than the other ????

Because the exhaust is restricting the max revs.

Power = torque X revs.

Ben

[Phill172]

Id imagine if you did comparable on my car compared to stock manifolds it would be the same, the e34 is definitely better

[HairyScreech]

There is probably more at play here than just the manifolds, the air filter and air box will have changed in the e30, along with the inlet trunking length.
The whole exhaust system has also changed in length and the position of the cross over, this will effect the torque curve of the engine more than most would think.
I would expect the E30 has a lot more heat in the bay that an e34 as well.

[Demlotcrew]

If I were to do a conversion, it would be an S54/S54 SMG or an M47TU, all others are way too much work for the return compared to the modern lumps.

[jmc330i]

If I were to do a conversion, it would be an S54/S54 SMG

I'm torn really. IMO the S50 suits the E30 engine bay perfectly, more so than the S54. The S54 looks too modern and out of place.
But from a performance/bang for buck point of view it would have to be an S54....

I can't afford either at the moment, so it's not something I need worry about for a while
And I do keep swaying towards a nice V8 rumble

[Demlotcrew]

You quickly get used to the modern looking engine and actually embrace it every time you lift the bonnet

An S54 conversion is the way forward, its minimal over the S50 with greater possibilities.

[Phill172]

Having driven a few and been in a few more the S50 swap is fast, i can really appreciate the way they drive. If you want to go fast especially round a track in a well set e30 my god they are quick.

This is Paul Dickinson car, although driven by rob welsh at brands



however, and im not biased, a v8 is hilariously good fun and way more fun in my eyes then a s50d car.

A v8 is still quick though and no different in speed compared to a 3.0 in my opionon, however a 3.2 has the legs on it (obviously).
Driveabilty on the track the s50 is in a different league.
The power delivery is totally different too, as i said above you can give a S50'd e30 to your grandma to drive, not quite the same with the v8 as the low rev power means it goes whatever gear and speed (if you have a normal ratio diff - no 2.91s) and the noise.....


Whatever makes you happy really, im a pikie and a show off so i like the noise and drama a v8 has, a s50 you can pass by and not know any different. Each are good at their own things....

[pony]

E30 / S54B32 = 333i