weight gain

[SUSIT]

Has anyone that has gone from beta power to V6 Alfa power got a before and after weight for their stratos.
I am interested in the difference in the installed weights.

Stephen Struthers

[chris.richard]

There was a discussion on this in the forum ?6-8 months ago. I remember using it to decide if the engine crane would be strong enough. The engine weight alone isn't the whole story, but it's probably worth a trawl through the archive for any other weights given in that thread.

I was told that my Hawk was 850kg with the lancia Twink, but minimal unfinished interior and some trim missing. No doubt Alloras come in different. (See Cars & Car Conversions article on the two replicas last summer; John Rutter's race car quoted at 900kg in the Kit Car article on it Jan 2002)

A 24v will have to be 1060 Kg at the time to pass it's logbooking for rallying, a 12v less but I can't remember what. As per blue book K 37. (See archive too)

[Stratos]

According to Dave Walker at the CCC test, my Allora was 944Kg. That was with nearly empty fuel tanks. It didn't have any sump guard, etc at the time, so I would expect it to be a little heavier in rally trim. It's a 12v V6.

Also according to Dave Walker, Tony Aylott's Corse I was 960Kg. This surprised me a lot, as we had expected the Corse I to weigh quite a bit less than the Allora. It had it's sumpguards on, and had full fuel tanks though.

[David May]

My Corse I 24V is 990Kg on the road, but was only 950Kg with the previous V6 12V turbo, despite shedding turbos, intercoolers etc. The 24V is fair bit heavier up top and I could feel it!

Dave May

[Stratos]

David,

You're saying the 24v is more than 40kg heavier than the 12v?

I'd have expected a bit of extra weight for the cams, etc, but not that much.

[chris.richard]

The 24v has the oil cooler extra plus a bigger alternator, but I'd have thought the loss of the turbo would more than compensate.
Alfa Romeo give a 30kg kerb weight increase for the 24v 164.

[David May]

Both setups were using the same oil coolers, alternators, etc and obvioulsy no power-steering or a/c pumps, but I can't be sure how accurate these weighbridges are and exactly how much fuel and spares I had on board at the time.
The old V6 was a 2L (Italian) model which may be somewhat lighter for the short-throw crank.
The farmer who was driving the tractor I used to swap the motors, said he struggled more with the 24V unit.
I agree that 40Kg sounds a bit high but them the heads are a whole lot more complex (incuding additional coils and sensors).

Dave May