Joined: 05 Mar 2005 Posts: 215 Location: Coniston, Lake District
Posted: Wed Apr 19, 2017 10:51 am Post subject: Do Hartech know something Porsche don't ?
My new GT3 will have a 4.0 engine and given what I've read on here, Hartech are going to offer a 3.9 and I'm sure I read on the forum that they don't recommend going to 4.0?
Just hope this isn't going to be another 996/997.1 example for my 4.0 engine where Hartech new better than Porsche? _________________ 991.2 GT3 in October, plus a Cayman 718 as a runabout in January.
adamw Estoril
Joined: 09 Jul 2009 Posts: 3541 Location: West Sussex
Posted: Wed Apr 19, 2017 11:02 am Post subject: Re: Do Hartech know something Porsche don't ?
Kryton wrote:
My new GT3 will have a 4.0 engine and given what I've read on here, Hartech are going to offer a 3.9 and I'm sure I read on the forum that they don't recommend going to 4.0?
Just hope this isn't going to be another 996/997.1 example for my 4.0 engine where Hartech new better than Porsche?
I would imagine the new GT3 units are more than strong enough for 4.0 and the "don't recommend going to 4.0" was aimed at m96/m97 (996/997.1) units. _________________ 02' 996 Turbo Manual Coupe, Seal Grey
EX : 95' 993 C4 Coupe ( Dec 10 - Oct 16 )
EX : 00' 996 C2 Cab ( Jul 09 - Oct 10 )
EX : 03' 986 Boxster S ( May 06 - Dec 08 )
infrasilver Fast & Furious
Joined: 04 Oct 2010 Posts: 7035 Location: East Midlands
It's a totally different generation of engine so the same principles don't apply, the GT3 is designed as a 4.0 where as the M96 isn't and is being modified to it limits (including brakes and cooling) to make it 3.9. _________________ http://euroroadtripper.blogspot.co.uk/
krispe Monza
Joined: 05 Feb 2014 Posts: 186 Location: Northampton
Posted: Wed Apr 19, 2017 1:10 pm Post subject:
I take it the original post is just a bit of fun
Hartech is referring to bore size for a M96/97 engine. The engine was originally designed as a 2.5 to begin with, (Porsche boxster). Stretching the bore out to 101mm (4.0L) could affect reliability. The GT3 engine is completely different design so 4.0 is not an issue. _________________ Seal Grey 997S - Now 3.9L engine with Hartech liners! Eibachs, H&R Rollbars,equal length manifolds, 200cel cats, RSS mounts
GT4 Nordschleife
Joined: 08 Nov 2008 Posts: 30191 Location: Hertfordshire and Hampshire
Posted: Wed Apr 19, 2017 1:45 pm Post subject: Re: Do Hartech know something Porsche don't ?
Kryton wrote:
My new GT3 will have a 4.0 engine and given what I've read on here, Hartech are going to offer a 3.9 and I'm sure I read on the forum that they don't recommend going to 4.0?
Just hope this isn't going to be another 996/997.1 example for my 4.0 engine where Hartech new better than Porsche?
I wouldn't worry, what are the odds you will keep it beyond the warranty?
Collect this one and the same day place the order for the next one.
Repeat until there is no premium
911tom Albert Park
Joined: 22 May 2012 Posts: 1570 Location: Buckinghamshire
Posted: Wed Apr 19, 2017 1:57 pm Post subject:
Hmmm the IMS will take a pounding! I think Porsche are of the assumption these cars will never actually get used so no one will ever know
All joking aside it is a completely different engine to the M96/M97 as others have mentioned above. _________________ 996 Turbo - Link to my 3.8L turbo build thread
2011 Cayenne
2009 Ariel Atom 3 Supercharged
350Bhp astra van for work
GT4 Nordschleife
Joined: 08 Nov 2008 Posts: 30191 Location: Hertfordshire and Hampshire
Posted: Wed Apr 19, 2017 2:01 pm Post subject:
It's the RMS I worry about, and the D-chunking
Kryton Monza
Joined: 05 Mar 2005 Posts: 215 Location: Coniston, Lake District
Posted: Wed Apr 19, 2017 3:29 pm Post subject: Re: Do Hartech know something Porsche don't ?
GT4 wrote:
Kryton wrote:
My new GT3 will have a 4.0 engine and given what I've read on here, Hartech are going to offer a 3.9 and I'm sure I read on the forum that they don't recommend going to 4.0?
Just hope this isn't going to be another 996/997.1 example for my 4.0 engine where Hartech new better than Porsche?
I wouldn't worry, what are the odds you will keep it beyond the warranty
18 months from new probably.
I know the new engine has titanium conrods and solid lifters but I thought the engine block would be the same casting (knowing Porsche's tight nature)
I'm a retired builder not an engineer. _________________ 991.2 GT3 in October, plus a Cayman 718 as a runabout in January.
alex yates Shanghai
Joined: 06 Mar 2014 Posts: 10784 Location: Lancashire
........ and I'm in the wrong job! _________________ 2000 Manual 996 C4 Arctic Silver Convertible
GT4 Nordschleife
Joined: 08 Nov 2008 Posts: 30191 Location: Hertfordshire and Hampshire
Posted: Wed Apr 19, 2017 9:06 pm Post subject: Re: Do Hartech know something Porsche don't ?
Kryton wrote:
GT4 wrote:
Kryton wrote:
My new GT3 will have a 4.0 engine and given what I've read on here, Hartech are going to offer a 3.9 and I'm sure I read on the forum that they don't recommend going to 4.0?
Just hope this isn't going to be another 996/997.1 example for my 4.0 engine where Hartech new better than Porsche?
I wouldn't worry, what are the odds you will keep it beyond the warranty
18 months from new probably.
I know the new engine has titanium conrods and solid lifters but I thought the engine block would be the same casting (knowing Porsche's tight nature)
I'm a retired builder not an engineer.
To be fair to Porsche, apart from the initial 991.1 GT3 run gremlins, they have all used bullet proof engines, either Mezgers or the 997.2 derived DFI (MA1) blocks.
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![Porsche 911 [991]](./images/models/998.png)
![Porsche 911 [997]](./images/models/Model-997.gif)
![Porsche 911 [GT]](./images/models/Model-GT.png)
![Porsche 911 [996]](./images/models/Model-996.gif)
![Porsche 911 [993]](./images/models/Model-993.gif)
![Porsche 911 [RS]](./images/models/Model-RS.gif)
![Porsche 911 [964]](./images/models/Model-964.gif)
![Porsche 911 [Early]](./images/models/Model-Early.gif)
