I've heard lots of stories about this engine, some good and some bad.

The fact is that they're really common because mini shops will put them in cars to get rid of them because nobody wants them.

In stock form I find it to be extremely rough, noisy and smokey. I hate this engine. You fry the rings when you rev it and then you get oil pissing out everywhere and smoke because of the blow by.

I know properly built that doesnt happen, and that these engines have a lot of potential, but there's a reason manufacturers don't build stroker engines anymore.

As soon as i can, i will be dropping a 998 block in.
There is a huge sacrifice in torque, but for all the embarrassing shuddering and vibration that comes with a 1100, i'll take the 998.

otherwise a new set of pistons/rods and crank and you're 1100 becomes a 998!

never had a problem with my 1100cc that i had in my mini. Things like starter motors, alternators etc went on it but nothing to do with the engine. Most 1100cc have been around the clock a few times so are up on the kms, but if looked after will last just as long as any other mini motor.

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1974 Moke - 998cc
76 Clubman B16a2 Vtec AWD Turbo 12.9@105mph
https://www.youtube.com/watch?v=V9PW49e1hYs

ive now got Brad's 1100 in my moke
nothing wrong at all
excellent power (i dont know what to expect from a 1310)
pulls good

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Inconspicuously Conspicuous
Appreciation without Depreciation
forever chasing clearer skies...

The original 1100 in my van, which has never been out of the car, runs like a clock. It's no beast, but is a nice little engine.

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I've done lots of 1098s, including 3 that I built with 1220cc, which were smoother and revvier than some 1275s I've had.
If your 1098 is noisy, rough and smoky it needs some work doing!

Let's face it- the stroke (3.3") is only 10% more than the 998 (3.0")... you would hardly call a 1098 a long stroke, and a 998 short. They are both way undersquare- the bore is only 64.6 mm or so.

BTW- the 998 block is exactly the same, so are the rods. If you want to go back to a 998 you just need a crank and pistons.

And, if you do it, don't throw away that 1098 crank- many people out there would love to have it!

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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.

well i've had an 1100cc in both my minis, and they've taken mighty abuse and kept on going.. but they have both have had shot rings, and they've both run like a bucket of nails. And... they've both been mighty strong and wheelspinning in second gear monsters.

But I had a chance to race in my friends 998, and i was quite impressed, it was much smoother and revvier and nowhere near as harsh.

Isn't that an apples to oranges comparison? You're comparing your mates 998 which sounds like its running like its supposed to, to your 1098 which sounds like its not running anything like how it is supposed to. As Dr Mini says, there isn't much difference between the two engines. If you compare a freshly built 998 to a freshly built 1098 they should both run equally as well, with the 998 more comfortable at higher rpms and the 1098 offering a little more torque down low. Instead of saying that the 998 is a better engine than the 1098, its probably more acurate to say that your driving style is more suited to 998s... higher reving... than the 1098.

dewey

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dwightgunning.com

i've got an 1100 in the old bomb at the moment and its taken some abuse but just keeps on keeping on. It was a 'reco' (not rebuilt) unit that was put in about 6 or 7 years ago now and was driven by an old lady for the first four years but i dont tihnk she EVER changed the oil or had it serviced. The oil was like black treacle or something when i got it. It's since been looked after a bit better, but by no means have i given it the attention it should be getting but it still pulls alright, doesn't burn much oil (its starting to get a little smoky...but i tihnk it's just running rich) and i've had absolutely NO trouble what so ever with the engine itself (...the clutch gave up once, but with that 1098 tourque MOUNTAIN to deal with what do you expect ).............so yeah i luv em

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well in my experience driving a well running and maintained
(as well as you can expect an 1100 to run) 1100 everyday, and having had the chance to drive my mates 998 in similar condition.. i would choose the 998 for everyday driving duties every time without hesitation.
On the racetrack, i could live with the harshness for the bagful of extra torque.

both engines are really awful beyond 5000rpm so neither are high revving...
Well, high revving for a bus maybe!

i've heard you can use shorter pistons and that fixes the problem with severe wear on the piston rings.

I had one that ran 8,500 with Imp pistons, and they're not much shorter than 1098 ones.
Reason 1098s don't rev is they just don't breathe.. mine had a worked 1100S (1275 ) head, 544 cam, twin HS4s... etc...

Decent head, carbs and cam on a 1098, then no problem to get good power to 7,000 with reliability.

<Edit> BTW, they do race 1098 Sprites don't they. Basically the same engine. Yeah the later ones do have 2" mains but a well known Sydney Mini etc engine builder told me this week they are more troublesome than the early ones with Mini sized bearings...

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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.

word

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play 3d car games for free

I dont have a heck of experience of modified engines, but I know in standard form the 1098 is a lovely engine. My K (ok its only done 26000 miles ) purrs and is very smooth. Plus, it has bags and bags of torque in stock form. I can start it in 2nd on a flat and 3rd on a slight incline - its very hard to get caught in the wrong gear. I only wish it had a fifth cog. Plus its all synchro..

998s tho, as standard... im not a big fan - you're constantly working the gears to keep up in all truth its not that much better than an 850.

Besides, 50hp aint bad, a 997 cooper only has 53 orsomethin..

And in my mates Morry 1100 its a nice engine too, so my only experience is a good one!

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ive got an 1100 in my car.
it sounds beautiful in high revs, it roars like some sort of tuff 2 litre, not a whimpy 1.1
And yes it may not have oodles of power, or anything, but i'd take an 1100 over a 998 anyday of the week and twice on sunday.

I've never had any problems (engine wise) with this 1100 since i bought it. I like how i can drive it softly and still keep up with traffic, or drive it hard and can get away from the congestion. Rather than my 850 u drive it hard to keep up with traffic or u drive it soft and ur doing 40kph 2km's after the traffic lights

dont know what ur crying about

get an 850 then....

my 1100 pulled well sounded good and never
smoked a day in its life. never had trouble
at all and was a great little engine