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UncleP
Silverstone


Joined: 27 Feb 2019
Posts: 122



PostPosted: Sun Mar 03, 2019 4:35 pm    Post subject: Ferrous/lokasil change over Reply with quote

Can anyone tell me if there's an easy way to tell if a 3.4 is the earlier ferrous pistons?

I gather the production change over was around 2000 but does that mean there's a clear change as I assume some 2001 cars registered march 01 would have possibly been in production late 2000.

Also, does model have any influence c2/c4?

Last question. Will a standard compression test alert to bore scoring? Or better to get a borescope?
 
  
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T8
General
General


Joined: 29 Jun 2010
Posts: 15652
Location: Kent


PostPosted: Sun Mar 03, 2019 6:49 pm    Post subject: Reply with quote

You'd need to send a pm to bazhart to get a simple answer about this or ring Hartech Engineering.

I had a quick look using the 'Search Forum' function using the word lokasil and the author bazhart and it came up with dozens of posts.

If you've got the time to do it you might find the answer in one of them.

I can't see why a C2 would be any different to a C4. The engine is the same.

Regarding borescore as I understand it the only way to know for sure is to have a borescope done by someone who knows how to analyse the resultant pictures.
_________________
2007 Guards Red 997 Turbo Tiptronic
ex 2004 Polar Silver 996T Tiptronic
ex 2002 Seal Grey 996.2 C4 Tiptronic
ex 1978 Silver 924 Manual
 
  
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UncleP
Silverstone


Joined: 27 Feb 2019
Posts: 122



PostPosted: Sun Mar 03, 2019 8:04 pm    Post subject: Reply with quote

Thanks. I did search and spent most of the afternoon trawling through posts. It was a post Baz made on pistonheads that started me wondering as it gave rough production change over dates.

I had hoped there would be a simple way to tell e.g cars built post August 2000 were the plastic ones.
 
  
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UncleP
Silverstone


Joined: 27 Feb 2019
Posts: 122



PostPosted: Sun Mar 03, 2019 9:29 pm    Post subject: Reply with quote

This is from a 2013 PistonHeads thread posted by Hartech. Probably gives as much info as I need for an informed decision.

"Early engines like Boxster 2.5, 2.7, 3.2 and the early 3.4 996 were OK. Later 996 3.4 engines could fail but didn't create enough torque to do so in numbers. (and had KS or Mahle pistons with a different piston coating)."
 
  
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