What makes a 998 really good ?

Post any technical questions or queries here.
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In the shed
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Re: What makes a 998 really good ?

Post by In the shed »

I'd much rather have a screaming full race little engine than a lazy big engine.

Put a 649 in it and a 4.3 FD. It's a mini. If you want to do any distance in it, put it on a trailer for the long drive.
seandoyle
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Re: What makes a 998 really good ?

Post by seandoyle »

Then I need a tow bar & trailer, not to mention somewhere to keep it. Not really me ! Due to being as old as the Mini I'v started to lose some of my hearing & once it's back on the road I will no doubt lose some more , even though it will be worth it !
Chalkie

Re: What makes a 998 really good ?

Post by Chalkie »

http://russellengineering.com.au/perfor ... der-heads/


202 seems to be the best according to our firends down under
'S'-type
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Re: What makes a 998 really good ?

Post by 'S'-type »

Thanks that's an interesting article.

The point is though, it takes a hell of a lot of modifying to make the 202 'better' than the 295. If you can't do it yourself that= expensive. As they come the 295 and 206 with the 'right' chamber volume are the simplest way to go, unless you enjoy grinding dust.
Chalkie

Re: What makes a 998 really good ?

Post by Chalkie »

As said though 295 is best standard head for the 998 with min work done

I've got 2 202s now (see my pervious thread broken one) so gonna have mine lightly modified on the cambers to same as a 295 then just a mild clean up in the ports to see how it goes be cheaper than sourcing a decent 295 theses days
seandoyle
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Re: What makes a 998 really good ?

Post by seandoyle »

Thanks Chalkie for the link to Russell Engineering , very interesting site. Are you the same Chalkie with the Downton Mk2 ?
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vulcanbb18
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Re: What makes a 998 really good ?

Post by vulcanbb18 »

Hey Rich - yes it is going like a cracker!

Guys you have to remember GR is down here in Oz like myself, and the 295/206 heads were already very rare to start with in these parts. For many, that makes the 202 the only option from the outset.

Interesting in parts of GR research that he's found the 295 casting does have some issues, especially with the way they got the extra port size - this is why a 202 can almost be better, more material to work with to get to a better shape.

The other issue always with the 295 is the huge chamber volume (28cc stock!) that requires a big chunk lopping off even before you start chamber work.

Having said all that, I still love my 295 on my current motor :mrgreen:

cheers,

Jacob
Chalkie

Re: What makes a 998 really good ?

Post by Chalkie »

seandoyle wrote:Thanks Chalkie for the link to Russell Engineering , very interesting site. Are you the same Chalkie with the Downton Mk2 ?

Nope that's not me I own a 79" 1000

Wish I had a Downton Mini
gr4h4m
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Re: What makes a 998 really good ?

Post by gr4h4m »

In my opionion, it's forcing the air in that makes 998's great
Chalkie

Re: What makes a 998 really good ?

Post by Chalkie »

gr4h4m wrote:In my opionion, it's forcing the air in that makes 998's great

Supercharger or turbo?
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rich@minispares.com
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Re: What makes a 998 really good ?

Post by rich@minispares.com »

Chalkie wrote:
gr4h4m wrote:In my opionion, it's forcing the air in that makes 998's great

Supercharger or turbo?

turbo I would say

wil kers 998 turbo road car was fantastic, it was that good that it ALMOST convinced me to build a perversion...... :lol:
should you wish, you can contact me on rich@minispares.com

'long beard boss'
Chalkie

Re: What makes a 998 really good ?

Post by Chalkie »

rich@minispares.com wrote:
Chalkie wrote:
gr4h4m wrote:In my opionion, it's forcing the air in that makes 998's great

Supercharger or turbo?

turbo I would say

wil kers 998 turbo road car was fantastic, it was that good that it ALMOST convinced me to build a perversion...... :lol:

Wills Motor is mental though my next engine will be bonkers
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