701 replies to this topic

[mini_in_progress]

look like a nice little project in the making here, looking forward to the updates

[coopdog]

just bought a new 12g295 head that is fully ported and polished, with unleaded valve seats so im going to use that instead of the head i got which needs loads of work,
then when thats done im reboring to 998 +40, putting the cam in and a x pin diff and centre oil pick up, then thats it until i can afford the manifold and MJ :)

[coopdog]

the head has come and was packed amazingly :L
http://www.theminiforum.co.uk/forums/topic/217370-how-a-parcel-should-be-packed/page__pid__2393709#entry2393709

the head its red but i will be painting it yellow to match the 998 engine and no one will be any the wiser



mmm ported and polished mmm

[coopdog]

right so the engine for now is going to be a
Fully strip down and rebuild so i know it will take the turbo and be running to the best of its ability, becuase nbow it is very rough and down on power


28/36 Weber Carb
RC40 1.75" Exhaust
LCB Manifold
Stage 3 12G295 Head
998+40 Making it a 1030cc
MG Metro Cam
X Pin Diff
Centre Oil Pickup

so hope fully that will give a nice 60 Bhp that will keep me happyfor know as i think the engine currently has like 34 or something low :L

so when i strip it down is there anything i should replace?
i will buy a full new gasket set
cam followers

not sure about the rest :/
new cam timing things, duplex?
any help would be amazing :)

[l_jonez]

My fast road 998 made 62bhp and that was na.

Check everything crank wear, end float etc also new oil pump

[coopdog]

My fast road 998 made 62bhp and that was na.

Check everything crank wear, end float etc also new oil pump

what was the spec of your 998?

[l_jonez]

1026cc (998 +40')
12g940 head
Sw5-07 cam
Center strap
Duplex chain
Hif44 +k&n cone
Maniflow stage 2 lcb
Single rc50 back box
Megajolt
Standard rebuilt gearbox

[coopdog]

1026cc (998 +40')
12g940 head
Sw5-07 cam
Center strap
Duplex chain
Hif44 +k&n cone
Maniflow stage 2 lcb
Single rc50 back box
Megajolt
Standard rebuilt gearbox

im looking at about the same Bhp figures then,
what was it like with 62 bhp, was it quick?

[l_jonez]

Was quick (bit faster than my cooper sport) just not enough for me. Was great fun tho

[coopdog]

Was quick (bit faster than my cooper sport) just not enough for me. Was great fun tho

seeing as ive had a slow 998 for 2 years i think the 62 bhp will be amazing :L
then when i get bored onto the turbo :)

[coopdog]

just got my manifold for a 28/36 weber

[l_jonez]

Hmm a down draft, not many use them. Pretty sure theres some one on swm with one

[coopdog]

Hmm a down draft, not many use them. Pretty sure theres some one on swm with one

yeah dont see many poeple using them,
my dad has one on his maxi and his friends used to use one on his mini so i though id give it a go :)
plus my dad has one packed away which was never used, so all i have to do is change the jets and im good

[george91]

So you are going to use the turbo engine as n/a until you put the turbo on it? and are you going to lower the compression ratio for the turbo even when its n/a? It might not be all that lively if you do, but at least you can get it run in.

Edited by george91, 10 March 2012 - 11:05 PM.

[coopdog]

So you are going to use the turbo engine as n/a until you put the turbo on it? and are you going to lower the compression ratio for the turbo even when its n/a? It might not be all that lively if you do, but at least you can get it run in.

yeah the compression ratio will be about 9:3:1 and that is what i need for the turbo and i will run it like that without the turbo,
i will only lose about 1% throughout the range over having a cr of 10 so im not too bothered :)

Edited by coopdog, 10 March 2012 - 11:10 PM.