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Forged engine
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Juho  



Joined: 03 Oct 2018
Posts: 132
Location: Finland

PostPosted: Wed Apr 08, 2020 5:04 am    Post subject: Reply with quote

Carrera RSR wrote:
Juho wrote:
Carrera RSR wrote:
May be still available? https://porsche924.co.uk/forum/viewtopic.php?f=12&t=33549


Would off the shelf piston be better and cheaper? How strong are these and can i run with na block and head?


They are NA spec forged pistons made by Omega, well known UK manufacturer of strong pistons, find anything else 'on the shelf' stronger!? Doubt you'll find a brand new set of NA specific pistons any cheaper either. Richard who is selling is a top guy and probably post to Finland.

No idea of other options, I'm not NA specialist.



hmmm do you think a thick headgasket would be enough to drop the cr for turbo or sc
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Carrera RSR  



Joined: 08 Jan 2010
Posts: 2052
Location: Somerset, UK

PostPosted: Wed Apr 08, 2020 6:19 am    Post subject: Reply with quote

Juho wrote:
Carrera RSR wrote:
Juho wrote:
Carrera RSR wrote:
May be still available? https://porsche924.co.uk/forum/viewtopic.php?f=12&t=33549


Would off the shelf piston be better and cheaper? How strong are these and can i run with na block and head?


They are NA spec forged pistons made by Omega, well known UK manufacturer of strong pistons, find anything else 'on the shelf' stronger!? Doubt you'll find a brand new set of NA specific pistons any cheaper either. Richard who is selling is a top guy and probably post to Finland.

No idea of other options, I'm not NA specialist.




hmmm do you think a thick headgasket would be enough to drop the cr for turbo or sc



?? I thought you were building an NA engine??

If you are boosting, then another piston with correct CR will be required. Omega make turbo spec pistons, I have a set in my car, but they will require 3 sets to be commissioned.
_________________
1980 931 - forged pistons, Piper cam, K27/26 3257 6.10 hybrid turbo, 951 FMIC, custom intake, Mittelmotor dizzy & cam pulley, H&S exhaust, GAZ Gold, Fuch'ed, Quaife
Now www.924board.org/viewtopic.php?t=34690
Then www.924board.org/viewtopic.php?t=31252
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Juho  



Joined: 03 Oct 2018
Posts: 132
Location: Finland

PostPosted: Wed Apr 08, 2020 6:55 am    Post subject: Reply with quote

Carrera RSR wrote:
Juho wrote:
Carrera RSR wrote:
Juho wrote:
Carrera RSR wrote:
May be still available? https://porsche924.co.uk/forum/viewtopic.php?f=12&t=33549


Would off the shelf piston be better and cheaper? How strong are these and can i run with na block and head?


They are NA spec forged pistons made by Omega, well known UK manufacturer of strong pistons, find anything else 'on the shelf' stronger!? Doubt you'll find a brand new set of NA specific pistons any cheaper either. Richard who is selling is a top guy and probably post to Finland.

No idea of other options, I'm not NA specialist.




hmmm do you think a thick headgasket would be enough to drop the cr for turbo or sc



?? I thought you were building an NA engine??

If you are boosting, then another piston with correct CR will be required. Omega make turbo spec pistons, I have a set in my car, but they will require 3 sets to be commissioned.


my car got carbs on the car atm but i want to buy a new engine and turbo it with forged internals over summer while driving. Going turbo since stroker is so expensive compared to the power youre gaining
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Juho  



Joined: 03 Oct 2018
Posts: 132
Location: Finland

PostPosted: Wed Apr 08, 2020 6:32 pm    Post subject: Reply with quote

http://vepracing.com/product/76MM-Stroke-Porsche-924-forged-billet-racing-crankshaft.html

Was just browsing and found this, its made by the same company as cheap rods.
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safe  



Joined: 18 Mar 2017
Posts: 186
Location: Sweden

PostPosted: Wed Apr 08, 2020 7:03 pm    Post subject: Reply with quote

Juho wrote:
http://vepracing.com/product/76MM-Stroke-Porsche-924-forged-billet-racing-crankshaft.html

Was just browsing and found this, its made by the same company as cheap rods.


Cool but non of the dimensions are the same as the 924 original crank. For example the stoke is 84mm in the 924.
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safe  



Joined: 18 Mar 2017
Posts: 186
Location: Sweden

PostPosted: Mon Apr 13, 2020 5:24 am    Post subject: Reply with quote

Carrera RSR wrote:
May be still available? https://porsche924.co.uk/forum/viewtopic.php?f=12&t=33549


Thank you for the tip, had missed that ad. I bought a set from him!
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Dutch924-racer  



Joined: 23 Jul 2007
Posts: 1062
Location: The Netherlands

PostPosted: Mon Apr 13, 2020 4:13 pm    Post subject: Reply with quote

how much was the set including shipping ?
_________________
937 trackday car
Series 2 engine
951S turbo and intercooler
937 DITC
Fast road camshaft
Forge recirculation valve + boost controller
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safe  



Joined: 18 Mar 2017
Posts: 186
Location: Sweden

PostPosted: Mon Apr 13, 2020 6:42 pm    Post subject: Reply with quote

Dutch924-racer wrote:
how much was the set including shipping ?


The adverised price included uk shopping, so slightly more than that. But its cheaper than anything else made for the 924 that you will find.
Then there will be an additional cost of machining the block.
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Carrera RSR  



Joined: 08 Jan 2010
Posts: 2052
Location: Somerset, UK

PostPosted: Mon Apr 13, 2020 8:52 pm    Post subject: Reply with quote

safe wrote:
Dutch924-racer wrote:
how much was the set including shipping ?


The adverised price included uk shopping, so slightly more than that. But its cheaper than anything else made for the 924 that you will find.
Then there will be an additional cost of machining the block.


They are at least 700 per set from Omega..... x 3 sets if you buy direct as they need minimum order to make a run of 12 pistons. So a bargain at the price Richard was selling for.

FYI - Similar for turbo pistons.......which I have in my car. There is a CGT owner looking at buying a turbo set and may need two others to go in with him.
_________________
1980 931 - forged pistons, Piper cam, K27/26 3257 6.10 hybrid turbo, 951 FMIC, custom intake, Mittelmotor dizzy & cam pulley, H&S exhaust, GAZ Gold, Fuch'ed, Quaife
Now www.924board.org/viewtopic.php?t=34690
Then www.924board.org/viewtopic.php?t=31252
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