hey guys i wont to get the most power out of my 998 motor as possible without having to sell my kidney or something to pay for it what modifications do you think i should do eg what type of head, should i put a 1100 crank in it.

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Cheers Dan

FIRST COMES THE MONEY, THEN COMES THE POWER, THEN COMES THE WOMEN.!!

There is a thread in here called "Power Tuning the 998" http://www.ausmini.com/forums/viewtopic.php?t=18602

have some porting done, bigger carb(s), extractors, exhaust, new camshaft.

can you put a different head on it from a different size motor

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Cheers Dan

FIRST COMES THE MONEY, THEN COMES THE POWER, THEN COMES THE WOMEN.!!

yes, but the cooper heads are rare, expensive and some require modification. wheras smallbore heads cost nothing and are readily available.
a 12g202 is a good dirt cheap head.


mmm head.

"get the most power out of my 998 motor as possible"

Well, start modifying ... I'm getting around 85HP@Wheels with my little 998 ....

Long-Stroke crank, 0.060 over, 1275 head, 1.5:1 rockers, large valves, ported and chanmber shaped, RE-13T Cam, Pulsar dizzy, Turbo, HIF-44 carb, PWR Intercooler, lightened flywheel and clutch backing plate... Lots of other stuff too ....

good for about 7000RPM and at the moment about 12PSI (Engine is 3 weeks old!!) going up to 14/16 in the next week or so ....

J

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with the utmost respect to your now 1100 turbo -

the way i see it modifying smallbores is about getting the most out of what u have without spending enough to buy a 1275.

I reckon different horses for different courses.

Some people like to take the easy route and buying and modifiyng a 1275 is
there way to go quick and that is fine.

Others like a bit of a challenge, Jim im sure knows that he could of bought a
1275 maybe for the money he spent. but has much satisfaction from
getting great results from a small bore..

similarly (I am not spending a great deal on my motor) i cant wait to get more
power and torque from my 998 than what i get with my 1293.. it just is a bit
of fun to do things a different way..

in saying that, if there is a 1275 available for the right money then of course i would
buy it and do something with that!! lol

Chris, I've actually SOLD 2 1275's to help fund this beast ! (and it still owes me a LOT of $$$)

BUT everything done to this engine can easily be moved over to a big-block... and make a little more power ...

Persoanlly, my motivation was to build a realtivly simple engine that could mix it up with the big boys, but still be able to tootle to the train or shops ...

yea, its a little grumpy now with the RE-13T and the rockers, but its still very, very drivable... it has the huge torque of an 1100, plus the shove in the back of a massivly modified 1275
(1st Ausmini Dyno day, the only 1275 to take me out was a race-prepped 1400cc Clubbie - yellow one...) and even then by only 0.8 of a HP ....
I was pretty damn happy that day... since then I have added the larger turbo, the large head and the intercooler as well as had some major revisions in the tuning and timing...

Lets just say, I've got a small-block that should be able to handle itself around most big-blocks .... and its alot of fun !
J

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didnt doubt the cost at all mate!!!

Just trying to say the reaasonin behind my
going for modifying a small block was for the satisfaction of doin things
different to the norm

I'm with you all the way ....

I'm a Small-Block Biggot at heart ....

Go the Underdog...
J

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I'm currently building a 1030cc for my van and the main reason for the small bore is money.

Not just in terms of the motor, but there's something a little unnerving to me about a stove hot 1275 with drum brakes all round. Call me crazy but I like to be able to reign in the horses.

Until I can afford a set of discs for the beast I'm gonna have to keep playing with small bore.

I also agree that there is a whole lot of satisfaction to be had from getting the most power out of the smallest capacity. But then, I like a challenge.

So, James, how are my ToyoMini (Corolla) rockers going then... and what clearance are you running.

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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.

using the formula for working out the capacity of engines using hairdryers your engine is rated at 1870cc far from being a small bore

Jon

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Roundies and Clubbies(except vans) are both ugly that is why I have Midas and a van
1293 Mini Midas Bronze,1275 Clubman van

if i put a 1100 crank and pistons in it, it's already been bored 60thou will i be able to still get a compresion ratio of 8:1 cause i would like to supercharge it as well.

with the 1275 head if i can get one at reasonable price will i be able to bolt it streight on or will i have to drill another head bolt hole and modify it.

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Cheers Dan

FIRST COMES THE MONEY, THEN COMES THE POWER, THEN COMES THE WOMEN.!!