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mooman10_0
 Post subject: Re: Increasing power
PostPosted: Sun Dec 06, 2015 4:35 pm 
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1098cc
1098cc

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Location: Kaniva / Adelaide / Melbourne
Just browsing different cams available. Would the GR 266 ss suit a 998 for road use?
Cheers,
Steve
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drmini in aust
 Post subject: Re: Increasing power
PostPosted: Sun Dec 06, 2015 6:41 pm 
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mooman10_0 wrote:
Just browsing different cams available. Would the GR 266 ss suit a 998 for road use?
Cheers,
Steve

Sure would, I've just put one into an 1108 (a 998 bored to 68mm).
With twin HS2s, a GR modded 202 head and an LCB it should sing nice. Rockers are refaced stock 998s with a new HD shaft.

BTW I had a Wade 104 in a 1293, even with 1.5 rockers and twin HS4s on that I was not impressed.

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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. :mrgreen:
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mooman10_0
 Post subject: Re: Increasing power
PostPosted: Sun Dec 06, 2015 7:00 pm 
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1098cc
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Location: Kaniva / Adelaide / Melbourne
That's what I wanted to hear :-)
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Minicooper4me
 Post subject: Re: Increasing power
PostPosted: Sun Dec 06, 2015 7:48 pm 
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What are the specs for a GR 266 compared with a Wade 104.
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mooman10_0
 Post subject: Re: Increasing power
PostPosted: Sun Dec 06, 2015 7:56 pm 
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1098cc
1098cc

Joined: Fri Sep 10, 2004 6:39 pm
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Location: Kaniva / Adelaide / Melbourne
Im not sure, they are advertised on mini kingdom site.
Just took a snap a the top of my pistons, how do I tell what size they are? None have std or any oversize marks that I can see anywhere. Below is a pic:
Image
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TK
 Post subject: Re: Increasing power
PostPosted: Sun Dec 06, 2015 8:46 pm 
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1275cc
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Location: Brisbane
GR 266 + twin HS2s, a GR modded 202 head and an LCB, refaced rockers stock 998s with a new HD shaft for under a grand?

still on your unbuilt 998?

go for it.

PS. please compare apples with apples.

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The bitterness of poor quality (or Crappy Workmanship) remains LONG AFTER the Sweet Taste of Low Price is forgotten.
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mooman10_0
 Post subject: Re: Increasing power
PostPosted: Sun Dec 06, 2015 9:03 pm 
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1098cc
1098cc

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Location: Kaniva / Adelaide / Melbourne
Anyone in the know able to fill me in if they are standard sized pistons?
Cheers,
Steve
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gtogreen1969
 Post subject: Re: Increasing power
PostPosted: Sun Dec 06, 2015 9:24 pm 
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mooman10_0 wrote:
Anyone in the know able to fill me in if they are standard sized pistons?
Cheers,
Steve

Maybe - Many standard pistons don't have any size markings. Do you have any vernier callipers to measure the bore size? Well worth getting a set especially if your going to be doing your own repairs.
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mooman10_0
 Post subject: Re: Increasing power
PostPosted: Sun Dec 06, 2015 9:28 pm 
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1098cc
1098cc

Joined: Fri Sep 10, 2004 6:39 pm
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Location: Kaniva / Adelaide / Melbourne
I have a friend who does the bore side of things so might have to take it down to him to measure :-). What is the standard 998 measurement ?
Cheers,
Steve
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drmini in aust
 Post subject: Re: Increasing power
PostPosted: Sun Dec 06, 2015 9:29 pm 
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64.6mm near enough.

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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. :mrgreen:
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mooman10_0
 Post subject: Re: Increasing power
PostPosted: Sun Dec 06, 2015 9:45 pm 
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Location: Kaniva / Adelaide / Melbourne
Thanks Doc!
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mooman10_0
 Post subject: Re: Increasing power
PostPosted: Tue Dec 08, 2015 8:02 pm 
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1098cc
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Location: Kaniva / Adelaide / Melbourne
timmy201 wrote:
The standard 998 head is ~24.5cc with C/R of 8.6:1
The standard 12G202 head is 26.1cc.

You'd need to skim the head or use some pistons with less dish in them.

I bought a "stage one kit" from minispares last year for about $500:
Exhaust manifold
Full exhaust
Intake manifold
KN filter
To go with a HS4 single carb.

Just a quick qu, is the 26.1cc for the 12g202 just the head volume or head volume and volume of dished piston combined?
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gtogreen1969
 Post subject: Re: Increasing power
PostPosted: Tue Dec 08, 2015 9:05 pm 
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Head volume only.
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