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Post by oldgit on Jun 10, 2009 18:49:12 GMT
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Post by katentel on Jun 10, 2009 20:22:48 GMT
thanks jim when can you fit it lol still thinking but this could be the way to go
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Post by monkeyjim on Jun 13, 2009 16:37:57 GMT
Sure a standard 1275 with your stage 1 will be adequate.
From personal Riv Run experiance .
I will never go back to a 998 , I did a couple of Riv Runs in a good 998 , I hated the hills and the only guy with a 1275 was chasing other cars and flying off into the distance like me and Jim do .
Last 4 have all been with a 1275 and I enjoy the run much more .
How about looking out for a Metro , there are still some around .
Then you can roadtest it .
Saves buying a load of old crap from ebay.
d
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Post by monkeyjim on Jun 13, 2009 18:11:44 GMT
Terry Check out www.theminiforum.co.uk look on the home page at 'latest tech' which is just under the miniforum heading . that basically goes over what some of us have been saying  |
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Post by katentel on Jun 14, 2009 9:10:48 GMT
thanks dave that was very interesting,looking maybe at changing rockers, is there anything else i would need to consider?or is this even a good idea?our next mini will be at least 1275 so this could be a relativley short term mod
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Post by mccarefree on Jun 14, 2009 20:53:37 GMT
At the risk of adding further to the big list of info that has been put into to this thread by the knowledgeable tuners in the club, here's a little real live info based on what I did to put some life into my boggo standard 1275. The engine was one of the last carb 1275s, (1994) with a cat. Out of the box it produced about 53BHP. By last year and with 40000 odd miles under its belt, it was down to 46 on Gerald's rollers, not very entertaining really! I wanted to give it some spark without pulling the motor out and getting involved with a full rebuild and cam change. So:
To breathe some life back into it: Bought an MG Metro cylinder head at Beaulieu for about £35 and spent hours (and hours) modifying it. It was a lot of work and with the cost of unleaded inserts, special seat cutting and skimming would probably have cost no more to buy a professionally modded head (although there's a lot of satisfaction to be had if you get it right). The rest of the tune just involved money really: Maniflow LCB manifold, single box exhaust system and inlet manifold, (approx £200), set of 1.5:1 forged (non-roller) rockers and a new shaft (£160) a brand new HIF44 carb from Burlen (£200 - ouch) though they can be found in quite good nick on Ebay) and a tuning session with AC, which involved some specific carb parts and a custom curved distributor (around £100). Result? A quick, entertaining and very tractable car that notched up 82+BHP when it went back on the rollers for a cost of about £750 + a lot of time and effort.
It's about attention to detail rather than bolting on lots of 'go faster' parts that aren't always compatible then getting it professionally set up when it's finished. I know that you are looking at a 998 not a 1275 but the same ideas apply....although you can't do it for nothing, it's not just down to £££. Another McRamble I'm afraid but hope it gives food for thought....Cheers. M
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Post by Deleted on Jun 15, 2009 22:09:31 GMT
i think if you went to 5 of the best engine builders in the country not one would tell you the same thing its called competition, who gives the best advice? i think it's a personal thing you find some one who is genuine and that you trust, though i must say some of the advice given on here is tried and tested, and excellent but it still comes down to what they personally wanted or could afford
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Post by katentel on Jun 16, 2009 12:21:59 GMT
choices choices choices???
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Post by monkeyjim on Jun 18, 2009 12:25:24 GMT
Cant see rockers doing anything on own for the 998.
A standard 1275 will .
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Post by Deleted on Jun 18, 2009 15:30:11 GMT
1.5 rockers will make a change, have 2 998s here fitted with them and nothing else done.
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Post by mccarefree on Jun 18, 2009 18:37:14 GMT
Can't argue with someone that's done it and found it worked but generally the 'experts' don't recommend high lift rockers on small bore engines. They're not always right of course! Drop AC a line; he'll give it to you straight. Cheers, M.
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Post by Deleted on Jun 18, 2009 18:45:08 GMT
good example of one engine builder saying some thing doen't work and another saying it does, why doesnt it work?
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Post by katentel on Jun 18, 2009 19:49:38 GMT
checking out prices for rockers and cant seem to find any specifically for 998.went into engine workshop in finmere rd they seemto say rockers on their own will see some increase in performance but should be done in conjunction with other mods.thats when i got lost. last night i viewed amg metro 1300 still in car seems to run ok sounds good.did a compressiion test readings were 180 165/170 180 180 left to right. any thoughts
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Post by oldgit on Jun 19, 2009 20:05:29 GMT
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Post by katentel on Jun 19, 2009 21:31:14 GMT
done 40k engine was stone cold purred after about 10 mins so ill be keeping my eye on it.no smoke oil dirty but no cream no patches underneath
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