16 replies to this topic

[ashbogg]

hi there, i have a chance off a 1100cc for my mini... i currently have a 998cc in it witch is ok but is smoking... the 1100cc is low milage so well worth considering putting in... is there much differnce in the power? top end? ect?

cheers Ash.

Edited by ashbogg, 08 March 2011 - 12:20 AM.

[Cooperman]

hi there, i have a chance off a 1100cc for my mini... i currently have a 998cc in it witch is ok but is smoking... the 1100cc is low milage so well worth considering putting in... is there much differnce in the power? top end? ect?

cheers Ash.

You can get a higher torque figure from a 1098, but it won't rev as well as a 998, so really the ultimate power is limited and, in reality, a 998 can give more top end power as it will rev without snapping its crank and can, therefore, use a 'hotter' camshaft.

[ashbogg]

hi there, i have a chance off a 1100cc for my mini... i currently have a 998cc in it witch is ok but is smoking... the 1100cc is low milage so well worth considering putting in... is there much differnce in the power? top end? ect?

cheers Ash.

You can get a higher torque figure from a 1098, but it won't rev as well as a 998, so really the ultimate power is limited and, in reality, a 998 can give more top end power as it will rev without snapping its crank and can, therefore, use a 'hotter' camshaft.

would it be worth just keeping my 998cc in then and fixing it smoking issues?.... i have heard aswell that 1100cc are common for reliability issues is this true ?

[twrminisport]

As above. I would stick with the 998 and fix that. whilst its out fit a hot cam and do some head work, HIF44 or twin HS2 to make the most of it and a few other bits and it will get 65 ponies at least.

1098 wont rev else the cranks snap.

Edited by twrminisport, 08 March 2011 - 01:19 PM.

[ashbogg]

oww rite think ill stick with that then.... what sort of price am i looking at for the cam ? ive got a lcb manifold for it ready to go on... you have any idea if that makes any noticeable differnt in pickup ect ?

[twrminisport]

Well. the sw5-07 camshaft is £266 but thats a full duplex kit and everything you need. Its abit girly though. Great for around town but pulls like a train

If you want it to be racey maybe a kent 276 cam? Mini spares for about £150 and then buy the adjustable duplex timing kit aswell. New followers, liners etc

[sx_turbo]

have a read of this article before you make your final decision

http://www.calverst....g_potential.htm

not half as bad as people on here will lead you to believe.

also think of how you use your car, and what it spends most of its time doing,

[_mini1000_]

As above. I would stick with the 998 and fix that. whilst its out fit a hot cam and do some head work, HIF44 or twin HS2 to make the most of it and a few other bits and it will get 65 ponies at least.

1098 wont rev else the cranks snap.

this is something that im planning on for my 998
would that 65 ponies be at the wheels or flywheel?

[matt large]

We had an 1100 in my sisters grasstrack mini years ago, 12g940 standard s head (double valve springs etc) 731 cam lightened flywheel and 45 dcoe and it pulled like a train, had something like a 3.9 diff in and was awesome. Raced it with 1275's and more than held its own considering car was built like a tank (dad wanted her to be safe) even raced it against xr2s and sierra's and still beat most of them.

No my sister can kill any engine

1.0 12v vauxhall - killed it
1.4 8 valve vauxhall - killed it
998 autograss mini - killed many
1380 autograss mini - killed

but the 1100 ran for about 4 years with no problems then finally gave way

still have it in garage and would love to stick it in a road car with a bit more done to the head.

like previous post decide how you want to use the car, 998's are great if you want them buzzing around at 6000-7000 rpm all day but the 1100 will pull from alot lower down due to the increased stroke of the crank.
Plus its something different and will only throw the crank if you try to run it at 6000-7000 rpm all day long which isnt good for any engine

matt : )

[D 'n A]

My vote goes to the 1100.
Had one in the past, and it was a sweet running engine, pulling nice everywhere in the rev range.

I like the 998 as well, and would be my choise when using a wild camshaft >275, when real revs are needed.

SW5 and wilder 266 camshafts wont over rev the engine and would work perfect for the 1100 engine.

[Cooperman]

The best opton is a 998 bored out to +0.060" (that's 1061 cc)with Hastings flat-top pistons, a 276 cam, a 12G295 gas-flowed head, a decent carb such as a HIF44 on an alloy inlet manifold, etc.
I too have had a 1098 in a Mini and it was no-where near as smooth as the 998. It's an 'orrible long-stroke engine with a poor crank.

[buddylove]

I loved my old 1100cc Clubman. It was a nice daily driver.

[huw_jenks]

have a read of this article before you make your final decision

http://www.calverst....g_potential.htm

not half as bad as people on here will lead you to believe.

also think of how you use your car, and what it spends most of its time doing,

I read this a few days ago and it made me wish i'd had a 1098 instead of a 998!

[twrminisport]

have a read of this article before you make your final decision

http://www.calverst....g_potential.htm

not half as bad as people on here will lead you to believe.

also think of how you use your car, and what it spends most of its time doing,

I read this a few days ago and it made me wish i'd had a 1098 instead of a 998!

i would never wish that. If you overbore a 998 with +0.080 pistons you can get it out to almost the displacment without the associated crank problems :/

[Cooperman]

have a read of this article before you make your final decision

http://www.calverst....g_potential.htm

not half as bad as people on here will lead you to believe.

also think of how you use your car, and what it spends most of its time doing,

I read this a few days ago and it made me wish i'd had a 1098 instead of a 998!

i would never wish that. If you overbore a 998 with +0.080 pistons you can get it out to almost the displacment without the associated crank problems :/

Yes, when you have seen a 1098 which snapped its crank at about 6000 rpm and all the bits went down through the transmission the idea of a modified 1098 tends to wane a bit.
I built a 1098 a couple of years ago for a Mk. 1 A-H Sprite rally car. It was not allowed a 1275 under the regs, but a 1098 is classed as a 'period mod'. It was bored to +0.040" and had a 276 cam, twin HS4's, a 12G295 head, etc, and gave 74 bhp at 6100 rpm. It was lightened and balanced and I set the owner a rev limit of 6400 rpm NTBE. It goes very well in its class and is highly competitive. However, if the crank breaks it won't take the straight-cut transmission with it as it's not a Mini.