Howdy y'all,

I've done a search and found related discussion but none that answer this directly.

Can anyone tell me the power figures for the 1980s/90s Rover engines - ie 998 and EFI 1275. I can appreciate that the engineering (hopefully!) improved over the years, but also would like to hear about any power improvements etc. Not looking for a drag car by any means!

I was window shopping at Brikworx last week and had a chat with Steve, now I'm thinking about whether to go for a Jap Rover front cut for my 68 Deluxe, tho it will be a fair way into the future... so for now just trying to do my homework and get some options.

Cheers

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Not sure about the 998, but the SPI 1275 was advertised as 61HP and the MPI, 63HP.

This compares to the previous MG Metro with single carb, ~72HP.

So- injection was purely for emissions, it was definitely not a great leap forward for HP.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

78 bhp produced by the Cooper S was the most powerful stock 1275 produced I think. They did make those very rare John Cooper Rovers, but the are overated at 90bhp. And the even rarer ERA turbo Minis.

Second to Cooper S is MG Metro I believe. A 1.3i is a good decently pwered engine. Not high performance by any means but qill keep up in traffic. The made around the 60bhp mark I think (all these figures are flywheel figures.)

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1964 Morris 850, 1330 Supercharged - 81.8hp atws.
1975 Leyland Mini S 1100S powered - Nice and reliable.
1977 Leyland Mini LS - Project LS-T

I think you may be dissapointed in the figures.

The Engineering "improvements" as I understand were aimed at lowering manufacturing costs while meeting ever tougher anti-pollution laws, than making things more exciting for the driver.

The change to EFI - the oft quoted prof of engineering "improvement" was the only way to meet the emmissions targets - it did bugger all for added power.

Leigh...as above, you can get more power from a few sensible mods to an A or A+, however, if you want Air Con and absolutely all the room under the bonnet taken up....well go for it

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"Show me the Mini!"

Well, i was thinking of putting in a pool and a zen garden, but perhaps I'll just stick with the current arrangements and look to make some renovations...


Cheers for all the knowledgeable and prompt advice folks!!!

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What about the late 80s model carburettor 998s? Are they the same physical size as the 1960s engines?

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yes , the blocks were basically the same size all the way through , various things changed along the way (they even lost the distributer towards the end ) but the block/gearbox are around the same size , just minor changes .

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The 90hp conversions done on the late 90's mini's never (usually) actually pull 90hp on a dyno. I hear the Burlen 52mm (is it 52mm???) throttle body is a good upgrade with the 90hp conversion - with that it does start to pull about 90hp.

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"In two years time your car will be like a lady's clothes, out of date, my car will still be in fashion when I am dead" - Sir Alec speaking to Pininfarina

with efi i imagine the fuel economy is drastically improved, and throttle response too.. cold starts are a breeze..

They get around on about 6 litres per 100 kays or so (specs) but drivers claim
it can be more like 8-10.
They are very smooth to drive as well.

My carby fed '92 specs 6.8 to 100k.