Ok i have a problem i was going to build a 998cc turbo, now im thinking of just having a worked N/A mini.
A couple of questions:
1. If i did the N/A thing would a 998cc or an 1100cc be a better option?
2. With the N/A what kind of things would i do to get good power?
I just dont know where to go with it all. I was even thinking superchargeing it but yeh i dunno what to do i just want a fast, reliable, fun engine.

Thanks Blake

A turbo A-series is going to be a good go-er, but will need nurturing and will be $$$ to be set up properly. I personally would go with a modded 1100 - something like

- 1098 +whatever oversize
- ported 12G202 head ala Vizard along the lines of 12G295
- Single 1&3/4" HIF (ie modern) SU on decent manifold (tuned to suit)
- RE13 cam
- LCB extractors (any brand, better is just more dosh)
- electronic ignition

Regards

Daniel

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Videos - Turbocharged A-Series on Dyno & at Wakefield
Mafs waz not my strong subgeckt at skkol

If it were me, there is no substitute for cubic inches - I would go an 1100 for the better torque for around town driving.


Enable it to breathe easier - carby, extractors, zorst, worked head and a nice cam (RE13?) are, again, the things I would be looking at.

My 2c.

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"In two years time your car will be like a lady's clothes, out of date, my car will still be in fashion when I am dead" - Sir Alec speaking to Pininfarina

see mini-dungers engine build fread!

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http://www.ausmini.com/forums/viewtopic.php?t=40206

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"In two years time your car will be like a lady's clothes, out of date, my car will still be in fashion when I am dead" - Sir Alec speaking to Pininfarina

What they all said...^^^
If going with a 295 head, find some flat top pistons, not dished- or your C/R will be lucky to get past 8:1, even with the head decked it'll be way too low for best power with a cam like an RE13. You want 10.0:1 at least.

If you MUST used dished ones (eg Hypatecs) I would work over a 202 head as DOZ says, and keep the chambers a bit smaller. You can also deck the pistons and block a bit to reduce the dish.

Or, do what I'm doing with the 1132 Moke- notch the block and drop a 12G940 or 12G1316 head on. Chambers are much smaller and I can get 10.5:1 C/R pretty easily, with stock Hypatec dished pistons. These heads need very little work to breathe as well as a 295, or better.

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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.

Or just build a 1275...

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I am the son of the STIG

HOTBRICKS
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'65 NCF MINI.....
'69 MINIMATIC.... 9 year resto still on the go

Kool thankyou.
Im aiming for higher compression with an N/A arent i?

Yep, low compression for forced induction engines.

do you have a budget in mind

_________________
I am the son of the STIG

HOTBRICKS
http://hotbricks.org.au/

'65 NCF MINI.....
'69 MINIMATIC.... 9 year resto still on the go

Umm i dont have a budget really as im not looking at doing it all at once i'll spent abit gettin wateva parts i need then put it all 2gether at once. But yeh no budget.

If you have to start from scratch then buy a 1275.. because in the long run the 1275 wull give better power for your dollar..
I have a friend who built a warm 998 with a little head work, swift tune cam, balanced, flat top pistons ... not fast enough put a super charger on it with 6psi not bad but a stock rover with extractors killed him on the track... He now regrets not spending the extra money at the start.. because if he had done all this to a 1275 he would have a ball tearer buy now...

_________________
I am the son of the STIG

HOTBRICKS
http://hotbricks.org.au/

'65 NCF MINI.....
'69 MINIMATIC.... 9 year resto still on the go

If budget isnt a problem go the small block forced induction....

Yes the 1275s may be the way to go for straight power, and more after worked, but they are getting harder to come by and at a cost when they do...what happens when/if you blow the ass out of it, you will have to find another or internals....if you want that much power, put the money towards a conversion and be done with it....

But after seeing Ben and Peters builds and what they are getting out of the small blocks, thats the direction I will be going...and when something goes, at least there is still a healthy supply of small blocks around...

Similiar to build whether you go forced or N/A....this is what I am looking at starting with....

998 stroked to 1100 and bored 40 thou
12g295 head with a bit of GR's magic, or after chatting with doc maybe a 12g940
RE13T cam from GR's (or RE13 if N/A)
8.4 disc brakes and converting to pot joints with remote box
Looking at different electronic ignition options atm (need to chat with Ben about the megajolt system)
Exhaust chosen after build and dyno....

Im for a 1275 but it sounds like 1275 engines are getting hard to find in ozzy. We still have a good souce of them here in New Zealand. So maybe a supercharged 1000cc with new/strong internals

1275 motors are not real scarce but they are not cheap any more.
Tip... buy what bits you see at the right price, not necessarily a complete motor at once.
1275 heads are a bit rarer but you can always grab one from NZ like Chong and I did, the freight on a head (13kg) is not too bad.

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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.