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YOUR RESEARCHM96 X51 'Cup' Engine rebuild / High Rev Options
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Use not garaged at night etc
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I have put my Boxster and 911 on normal policies now and they are cheaper, plus I get work use, not garaged at night etc
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There's a great thread on Pistonheads with someone taking a M96 to bits and engineering out the weaknesses. I know Baz has been involved, among others on 911uk.
The lengths that they are going to is amazing, but is there a half way house for those that don't want to sink quite that much into it?
If we are looking at a normal rebuild, due to bore score, IMS, etc and due to the ridiculous
insurance
market that means insuring a 3.9 996 conversion is more than a 996TT by some margin (my insurance goes form under £300 to £1900 a year with the 3.9 conversion) what are the options to create a stronger, more reliable engine?
I love the idea of higher reving, in line with the GT3, but assume things like pistons and rods would need to be part of the rebuild to achieve that safely.
Might be a question for Baz, but for those wanting to combine a performance /character increase as part of a rebuild, what the options available?
Who are you insured with? I've found that specialist insurers are very reasonable with engine swaps so I don't see why oversize rebuilds should be that much different...
I understand the 3.7 build is a bore increase so maintains the stroke of the 3.4 and so doesn't affect the revvy nature of the engine whereas the 3.9 does involve a longer stroke which might lead to a less revvy feel.
I assume the replacement pistons are most likely lighter and better balanced than the standard items anyway.
I'd say that a 3.7 with a fully balanced bottom end, additional crankshaft bearing at the flywheel end allowing a lighter weight flywheel and some good aftermarket management would lead to a very nice road/occasional track car.
I don't know what the limiting factor on revs is for the M96 - the dyno plots indicate than the cams/heads are running out of puff at the standard 7,200rpm rev limit so scope for raising that might be limited.
Yes, that's it. although not just specific higher revving, but addressing the known weakness. some of the parts they've had designed and machined is incredible. but all that machining costs lots
That's your first mistake, have a chat with some specialist brokers, Adrian Flux, Sky Insurance, AIB are a sponsor here and they will all give much better quotes than the usual crowd on on insure my meercat or whatever.
Just google modified car insurance and start there.
Try 'Mannings' for your insurance.
I have a 3.7 lump somewhere between standard oversize and where Dammit & MC will end up, uplift was marginal in cost, circa 10% which equated to around £40.
Manning also offer unlimited trackday cover as part of their policies.
Based on my experience with my TVRs, it's your postcode that affects modifications. In south London my mildly modified 5.3 had high premiums and a couple of no bids. My friend had a very similar car with a highly modified 5.5 and huge power, roll-over bar and loads of other changes and his insurance was less in Sussex.
It's as much the small * as well if you have a classic car policy. I have put my Boxster and 911 on normal policies now and they are cheaper, plus I get work use, not garaged at night etc
http://www.carinsuranceexplained.com/car-insurance-explained/car-insurance-postcode-risk-list.html
I'm insured through Locktons on the PCGB scheme and when I collected my car from Hartech in March I rang them and said the engine has had a rebuild and it's now a 3.9, there was no increase in premium...
