13 replies to this topic

[jonny-b]

Anyone know the max power available since i want to keep all the number matching, I think this may be a rarity one day

Was thinking doing the following

Stage one kit
Fast road cam
Roller Rockers 1.3 or 1.5 ratio
Twin su carbs
gas flowed head with larger valves

Any idea what the above might push out after being set up.

thanks in advance

[taffy1967]

Well the John Cooper Converted 998cc Minis were similarly equipped and they pushed out around 60bhp: -

[ERAturbo]

and it WILL feel very nippy...I had similar (albeit a tuned original 998 cooper engine) spec, and it was quicker than my stock 90's 1275 cooper.....a revvy little bu**er.

Have fun

[T.Harper]

im local to im from the lovely woolwich lol but im not on the road as my insurance on a 998 mini is £2500

and it WILL feel very nippy...I had similar (albeit a tuned original 998 cooper engine) spec, and it was quicker than my stock 90's 1275 cooper.....a revvy little bu**er.

Have fun

Really depends on your final drive ratio. Some 998s have 2.95 diffs as standard and nippy isn't the word!

If you want to take the engine out to do this work then it's worthwhile thinking about a change of final drive if you have something particularly tall, or if you want something short - what do you want, comfortable cruising or faster acceleration. You should go 3.1 for the former or 3.44 for the latter with a 998.

[taffy1967]

What model Mini is it?

Most Mini City E's (up to 1989?) had the 2.9 diff and so did the Mini 25 LE.

Apart from that they came with the 3.1 diff as standard.

Put your engine number into this and it will tell you what you have: -

http://www.guess-wor...ical/engine.htm

[jonny-b]

Just researching at the mo but its a mayfair 1985 i think C reg.

Thanks for that john cooper guide, thats awesome.

Oh forgot to add, accelaration i think would be more the objective.

Edited by jonny-b, 18 November 2008 - 05:07 PM.

[cap'n crunch]

Stage one kit
Fast road cam
Roller Rockers 1.3
Twin su carbs
gas flowed head with larger valves

i would say mid to high 60's maybe 70's if you have a good'un and will depend on what sort of cam or cylinder head you use.

[taffy1967]

Just researching at the mo but its a mayfair 1985 i think C reg.

Thanks for that john cooper guide, thats awesome.

Oh forgot to add, accelaration i think would be more the objective.

Well if it's a Mayfair then it should be a 3.1 diff.

But switching to a 3.44 diff would be best since acceleration is the most important factor here.

[newbambeeno]

What sort of MPG would you be looking at after doing said mods?

[wolfys_mini]

i personally would pocket the block and have a decently worked mg metro 1275 head a nice cam like the sw5,286, mspd ph3, i wouldnt bother with the twin carbs, but its upto you. if you go for a single...hif38, nice little stubstack and k&n on the back

3.1:1 final drive ratio, centre oil pick up pipe

and paint it

nice 60+

*i defiantly didnt say hif44*

Edited by wolfys_mini, 18 November 2008 - 05:50 PM.

[taffy1967]

According to JC Garages quote in the enclosed brochure: -

overall mpg 31.4 mpg

touring 42.4 mpg

[taffy1967]

i personally would pocket the block and have a decently worked mg metro 1275 head a nice cam like the sw5,286, mspd ph3, i wouldnt bother with the twin carbs, but its upto you. if you go for a single...hif44, nice little stubstack and k&n on the back

3.1:1 final drive ratio, centre oil pick up pipe

and paint it

nice 60+

A HIF38 carb would be enough for a 998cc?

[wolfys_mini]

oh yeah...sorry, two thoughts going round in my head

yes i dream of carburettors

Edited by wolfys_mini, 18 November 2008 - 05:50 PM.

[jonny-b]

Thanks for that i will do some costings i think.

Only really wanted twin carb cause it looks nice