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996 Cylinder misfire problem Help !!

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Old Jul 28, 2011 | 04:34 PM
  #16  
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Contact Jake Raby at Flat6innovations, they are the 996 engine experts.
 
Old Jul 28, 2011 | 07:21 PM
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Maybe this?

http://www.lnengineering.com/boxster.html
 

Last edited by LCid; Jul 29, 2011 at 02:46 PM. Reason: add link
Old Jul 29, 2011 | 09:35 AM
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If you have a crack in a cylinder wall, you'll have to replace the cylinder sleeve. For the 996 the whole cylinder housing is made out of one block (to save money) thus you have to completely open the engine and essentially rebuild it. This is where the cost comes from; the pieces are around $3,000, but the labor even at $100/h is over 40 hours. You add it all up and you are talking including taxes about the dreaded $10,000.

If you use LN engineering sleeves (Nickies) they assure that it will never happen as they are reinforced, different process, etc. But, this will add another $4k to your bill.

Not a good situation. I ended up doing it. Costed me $8.500 and I was lucky.
 
Old Jul 31, 2011 | 09:40 PM
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Thanks for the prompt responses guys! I have made the tough decision to go with LN engineering. Though it will be costly, I believe that this will give me peace of mind and this problem wont happen again in the future. Tarzancoe you said you had the same problem as me and you went with Ln engineering. Did they include all the piston rings and all those parts in the deal? and did you have to do the head gasket as well ?? thanks for the advice man!
 
Old Jul 31, 2011 | 10:12 PM
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I did consider going with their cylinder sleeves but I did not and used "normal OEM" ones to save $4k. In retrospect, I should had done in. Whether you have the engine rebuilt by somebody else or by LN, at the end of the day they are the only ones that make such aftermarket products, and they work. There is somebody in the UK... but that's the UK. You'll have a bulletproof engine with LN
 
Old Aug 1, 2011 | 01:18 PM
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I actually don't have enough money to do the LN sleeves as thy are very expensive. Where did you get the OEM sleeves? I would like to go with those. And how did you install the sleeves?
 
Old Aug 1, 2011 | 11:11 PM
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I did not get the oem sleeves myself... the indy that did the job for me did. If I had chosen to go with LN, he would had ordered from them as well. send me PM if you want more details.
 
Old Aug 2, 2011 | 10:51 AM
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I have a guy in San diego that has a 3.4 engine, he wants about $5k and 1000 for install.. Let me know.. They just did my engine, so far it works. He offered warranty.
 
Old Aug 5, 2011 | 11:16 PM
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my mechanic and LN engineering are estimating me around $15,000 to sleeve my engine and install it. Why is this so expensive?
 
Old Aug 6, 2011 | 06:54 AM
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At $15K you are fast approaching the cost of a Flat6 engine. Here is a source from eBay for the sleeves.

http://cgi.ebay.com/ebaymotors/ws/eB...K%3AMEWAX%3AIT

Don't know much about them and you would have to find a machine shop to install them. Try talking to Costa Mesa R&D, they may have the capability or experience to install the sleeves.

Any of these solutions still requires a total tear down of the engines, and once you do that it is silly not to replace the bearings, etc. etc. etc.
 
Old Aug 6, 2011 | 11:07 AM
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cracked sleeve

Thanks dharn! So i would order those cylinders off ebay and have someone machine and install them right? These cylinders are much cheaper than the ones that LN engineering has. So that will save me a ton of money. I will do the bearing as well now that I am saving some money.
 
Old Aug 6, 2011 | 11:15 AM
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I need to find reliable place machine and install these cylinders... any ideas??
 
Old Aug 6, 2011 | 12:27 PM
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First I would do some research on these cylinders. Not that familiar with them but they have been out there for a while. Is the 95.5 mm the stock size, i.e. compatible with the stock pistons? Check this out before you buy anything.

Talk to John Edwards at Costa Mesa R&D (www.engine-machining.com) to see if he can do this work. He did the repair of my heads and has a lot of experience and knowledge. The pictures make these look stronger than the OEM cylinders but who know.

You are going to spend $1,000+ on other things you will need as this is basically a rebuild. Gasket set for entire engine, head gaskets, head bolts, rod bolts, bearings (rod and main), piston rings, maybe water pump, etc. etc. etc. Probably closer to $2,000 plus the labor. Won't be cheap, but less than many alternatives.
 
Old Aug 15, 2011 | 01:27 AM
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Thanks again for the reply dharn. So heres an update, I have spoken to a few mechanics, some track Porsches, and some just repair them. however, none of them are willing to fix or machine in my new cylinders. I am once again stuck here, with my car at the mechanic. I am going to buy those cylinders, and have them installed. who can do this for me? anyone know someone who can machine in cylinders in the toronto area?
 
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