Show full size 924Board.org
Discussion Forum of 924.org
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 
 Technical FAQ924 FAQ (Technical)   Technical924 Technical Section   Jump to 924.org924.org   Jump to PCA 924 Registry924 Registry

performance improvements
Goto page Previous  1, 2, 3, 4, 5, 6, 7, 8, 9, 10  Next
 
Post new topic   Reply to topic    924Board.org Forum Index -> Performance Upgrades
View previous topic :: View next topic  
Author Message
morghen  



Joined: 21 Jan 2005
Posts: 7886
Location: Romania

PostPosted: Fri Oct 09, 2015 1:58 am    Post subject: Reply with quote

You can replace the head yourself.
_________________
red 924 and not red 924
Back to top
View user's profile Send private message Visit poster's website Yahoo Messenger MSN Messenger
chris79  



Joined: 29 Jan 2014
Posts: 551
Location: milan

PostPosted: Fri Oct 09, 2015 2:11 am    Post subject: Reply with quote

head? No, I want to modify cam.
_________________
Porsche 924 2.0 na 125hp (1979) euro
------------------------------------------------------
Alfa Romeo Spider "Duetto" 1.6 104hp (1986) euro
Back to top
View user's profile Send private message
kcoyle  



Joined: 16 Jan 2011
Posts: 714
Location: Long Island, NY

PostPosted: Fri Oct 09, 2015 5:11 am    Post subject: Reply with quote

Chris79,

Please to find the Italian kind of this book somewhere. Then good conversation can be made.
http://www.amazon.com/gp/product/0870061836?psc=1&redirect=true&ref_=oh_aui_search_detailpage

All say there is very little more power to be made from this
engine for little money.
_________________
1982 931- Stock with MBC at 8psi

Relax, all right? My old man is a television repairman, he's got this ultimate set of tools. I can fix it.
Back to top
View user's profile Send private message
fiat22turbo  



Joined: 18 Jan 2006
Posts: 4040
Location: Portland, OR

PostPosted: Fri Oct 09, 2015 5:27 am    Post subject: Reply with quote

chris79 wrote:
I can modify cam myself ?
Really?


No, they are having a joke at your expense.

C'mon guys, contribute something worthwhile or just ignore him. We get so few new people around here, let alone those that stay that being childish doesn't help.

That said, Chris, as we've discussed over and over again. There's no quick power upgrades available. No cheap or easy solutions. Save your money and do it right once. If you can't listen to what we've all told you over and over again then we will have to stop trying to help and begin ignoring your posts. Sorry, but it is getting exhausting repeating the same things over and over again.
_________________
Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose)
Back to top
View user's profile Send private message Visit poster's website
morghen  



Joined: 21 Jan 2005
Posts: 7886
Location: Romania

PostPosted: Fri Oct 09, 2015 4:06 pm    Post subject: Reply with quote

I wasnt joking, buy the Mittelmotor replacement head.
Take off the intake and exhaust manifold, have a new headgasket and timing belt ready. Replace the old head with the Mittelmotor head, dial in the valve timing using the makrs. Put everything back and enjoy a considerable amout of more power.

You can do this in your own garage, you only need the following:

-Mittelmotor head
-headgasket
-timing belt kit
-torque key
-set of spanners

http://www.mittelmotor.de/content/news/default.asp
_________________
red 924 and not red 924
Back to top
View user's profile Send private message Visit poster's website Yahoo Messenger MSN Messenger
nickthompson  



Joined: 26 Mar 2013
Posts: 859
Location: Central Georgia

PostPosted: Fri Oct 09, 2015 7:01 pm    Post subject: Reply with quote

morghen wrote:
I wasnt joking, buy the Mittelmotor replacement head.
Take off the intake and exhaust manifold, have a new headgasket and timing belt ready. Replace the old head with the Mittelmotor head, dial in the valve timing using the makrs. Put everything back and enjoy a considerable amout of more power.

You can do this in your own garage, you only need the following:

-Mittelmotor head
-headgasket
-timing belt kit
-torque key
-set of spanners

http://www.mittelmotor.de/content/news/default.asp


You forgot the giant pile of cash for the Mittelmotor head.
Back to top
View user's profile Send private message Yahoo Messenger
morghen  



Joined: 21 Jan 2005
Posts: 7886
Location: Romania

PostPosted: Fri Oct 09, 2015 8:36 pm    Post subject: Reply with quote

To be honest, a fresh head with 15hp peak more power and overall higher power and torque curves is worth that money. And yea the 924s are cheap..but thats the cool part...5k budget gets you a pretty fast and cool 924.
_________________
red 924 and not red 924
Back to top
View user's profile Send private message Visit poster's website Yahoo Messenger MSN Messenger
WEASEL149  



Joined: 19 Aug 2005
Posts: 595
Location: UK, Sheffield

PostPosted: Fri Oct 09, 2015 9:27 pm    Post subject: Reply with quote

I agree with Morghen. Proven bolt-on parts are an ideal way to get into tuning cars.
It costs more initially but probably less in the long-run.

Buy some books and do your research on removing and refitting parts correctly, then go for the bolt-on route Chris.
You will learn a lot on the way.
_________________
1979 UK 932
Back to top
View user's profile Send private message
WEASEL149  



Joined: 19 Aug 2005
Posts: 595
Location: UK, Sheffield

PostPosted: Fri Oct 09, 2015 9:32 pm    Post subject: Reply with quote

Relatively speaking, the Mittelmotor head is reasonably priced.
A well-known tuner here in the UK charges 2000 for a fully ported big valve 931 head.
That doesn't include the head core which you must supply yourself.
_________________
1979 UK 932
Back to top
View user's profile Send private message
chris79  



Joined: 29 Jan 2014
Posts: 551
Location: milan

PostPosted: Fri Oct 09, 2015 10:51 pm    Post subject: Reply with quote

yes probably is the best bolt on, but more expensive for me.
_________________
Porsche 924 2.0 na 125hp (1979) euro
------------------------------------------------------
Alfa Romeo Spider "Duetto" 1.6 104hp (1986) euro
Back to top
View user's profile Send private message
chris79  



Joined: 29 Jan 2014
Posts: 551
Location: milan

PostPosted: Sun Oct 25, 2015 2:04 am    Post subject: Reply with quote

Anyone tried to create cad model of 924 head intake ?
It's possible to test air flow and optimize them with some tools cad based.
If anyone can provide this model, we can found a public way to fix 924 head, not?
_________________
Porsche 924 2.0 na 125hp (1979) euro
------------------------------------------------------
Alfa Romeo Spider "Duetto" 1.6 104hp (1986) euro
Back to top
View user's profile Send private message
morghen  



Joined: 21 Jan 2005
Posts: 7886
Location: Romania

PostPosted: Sun Oct 25, 2015 3:05 am    Post subject: Reply with quote

Mittelmotor have done this. If you would like to do it as well, it will cost more than the price Mittlemotor is asking for a fresh head that is "fixed" and gives you 15hp more.
_________________
red 924 and not red 924
Back to top
View user's profile Send private message Visit poster's website Yahoo Messenger MSN Messenger
chris79  



Joined: 29 Jan 2014
Posts: 551
Location: milan

PostPosted: Sun Oct 25, 2015 7:23 am    Post subject: Reply with quote

I don't think, with a simple dremel it's possible to modify intakes and it's possibile even to add material where needed.
This work is free if made by itself.
I do not understand why a free forum is always pushing to spend so much money instead of proposing solutions.
_________________
Porsche 924 2.0 na 125hp (1979) euro
------------------------------------------------------
Alfa Romeo Spider "Duetto" 1.6 104hp (1986) euro
Back to top
View user's profile Send private message
Harm  



Joined: 02 Apr 2009
Posts: 1308
Location: Holland

PostPosted: Sun Oct 25, 2015 7:47 am    Post subject: Re: performance improvements Reply with quote

chris79 wrote:
I don't think, with a simple dremel it's possible to modify intakes and it's possibile even to add material where needed.
This work is free if made by itself.
I do not understand why a free forum is always pushing to spend so much money instead of proposing solutions.


I do not understand why you keep whining like a kid on a free forum that holds over ten years of experience and you haven't read a darn single thread that will help you make up your mind.
Get a Dremel, work that head, and report back a year later what we are missing.
Thanks for your input.
Harm.
Back to top
View user's profile Send private message
kcoyle  



Joined: 16 Jan 2011
Posts: 714
Location: Long Island, NY

PostPosted: Sun Oct 25, 2015 10:52 am    Post subject: Reply with quote

chris79 wrote:
I do not understand why a free forum is always pushing to spend so much money instead of proposing solutions.



_________________
1982 931- Stock with MBC at 8psi

Relax, all right? My old man is a television repairman, he's got this ultimate set of tools. I can fix it.
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    924Board.org Forum Index -> Performance Upgrades All times are GMT + 11 Hours
Goto page Previous  1, 2, 3, 4, 5, 6, 7, 8, 9, 10  Next
Page 8 of 10

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group