SAAB V4 Forum
SAAB V4 Forum
Home | Profile | Register | Active Topics | Members | Search | FAQ
Username:
Password:
Save Password
Forgot your Password?

 All Forums
 Technical
 Tuning
 92.3mm Pinto pistons
 New Topic  Reply to Topic 
 Printer Friendly 
Previous Page | Next Page
AuthorPrevious Topic Topic Next Topic
Page  of 5

Krister K
Starting Member

Sweden
36 Posts

Posted - 24 Feb 2015 :  13:58:38 Show Profile Reply with Quote
For this engine I will use Sweedspeeds head gaskets, it is std type modified for up to 94.0mm bore.

Saab 96 v4 '75b
Go to Top of Page

Krister K
Starting Member

Sweden
36 Posts

Posted - 02 Mar 2015 :  19:37:41 Show Profile Reply with Quote
Some photos on the engine if you want to see..:









Saab 96 v4 '75b
Go to Top of Page

Krister K
Starting Member

Sweden
36 Posts

Posted - 09 Mar 2015 :  20:12:39 Show Profile Reply with Quote
How do you guys solve the valve train geometry when using a reground camshaft?
I could use some longer pushrods. Is there longer pushrods "of the shelf" from some other engine/make that is usable, or is custom made the only way?

Saab 96 v4 '75b
Go to Top of Page

Krister K
Starting Member

Sweden
36 Posts

Posted - 27 Mar 2015 :  23:26:54 Show Profile Reply with Quote
Some progress made today: https://youtu.be/HGiJnnrC3NQ



Saab 96 v4 '75b
Go to Top of Page

melle
V4 Guru

United Kingdom
2496 Posts

Posted - 28 Mar 2015 :  09:15:20 Show Profile Visit melle's Homepage Reply with Quote
Great news! What did you do with the push rods in the end?

1970 96V4 "The Devil's Own V4"
1977 95V4 van conversion project
1988 900i 8V
Go to Top of Page

Krister K
Starting Member

Sweden
36 Posts

Posted - 28 Mar 2015 :  18:01:14 Show Profile Reply with Quote
quote:
Originally posted by melle
Great news! What did you do with the push rods in the end?




I used std pushrods, and lowered the valve train (?) instead. Std procedure. I think I made a problem of something that really isn`t a problem.

Saab 96 v4 '75b
Go to Top of Page

Krister K
Starting Member

Sweden
36 Posts

Posted - 03 Dec 2015 :  20:50:07 Show Profile Reply with Quote
The engine is in parts again since a couple of months back due to excessive "pinging". Fettling with ignition timing and carb jetting didnt solve the problem. Did my math and came up with a comp ratio of about 12:1, so off went the heads.

Now I have adjusted the cc of the combustion chambers, so I will have a comp ratio of ~10.5:1.

Did some more work around the valveguides too:



Bought a new 7.6 camshaft and lighter lifters (81g) to replace the UA12 cam/std lifters for some more low/midrange power. The 81g lifters are Ford v8 "Nascar" lifters bought from US:
http://www.ebay.com/itm/NASCAR-Lightweight-81-gram-Ford-221-thru-460-Mech-Flat-Face-Solid-Lifters-/201466630068?hash=item2ee858cfb4:m:mJaatw00h16fUGIeg50CFrg&vxp=mtr

Heads are at the work shop right now being resurfaced as they where a bit warped.



Saab 96 v4 '75b
Go to Top of Page

melle
V4 Guru

United Kingdom
2496 Posts

Posted - 03 Dec 2015 :  21:43:13 Show Profile Visit melle's Homepage Reply with Quote
Wow, do those Nascar tappets fit the standard bores? They're amazingly cheap compared to standard V4 tappets!

www.saabv4.com
Go to Top of Page

Krister K
Starting Member

Sweden
36 Posts

Posted - 04 Dec 2015 :  08:35:09 Show Profile Reply with Quote
They are a perfect fit, except length wise, the pushrod sits approx. 3mm higher in the v8 lifter. I think the adjusters can handle it though... :-)

Saab 96 v4 '75b
Go to Top of Page

melle
V4 Guru

United Kingdom
2496 Posts

Posted - 04 Dec 2015 :  08:48:31 Show Profile Visit melle's Homepage Reply with Quote
Great, let us know how they work in practice and I will add them to the cross reference thread if successful: http://www.saab-v4.co.uk/speedball/topic.asp?topic_id=16498

www.saabv4.com
Go to Top of Page

Krister K
Starting Member

Sweden
36 Posts

Posted - 17 Dec 2015 :  22:27:56 Show Profile Reply with Quote
Ford v8 "Nascar" lifters seems to work just fine in the v4:

https://youtu.be/M7KUhHOzGBg

Saab 96 v4 '75b
Go to Top of Page

James Ranaldi
V4 Guru

United Kingdom
1377 Posts

Posted - 18 Dec 2015 :  09:05:56 Show Profile Reply with Quote
Good morning Krister,

Great work . . . . . Your engine sounds wonderful.
I now have a very large smile on my face
Cheers
James

1968 V4, LHD
1984 99 GL
1992 900i Convertible
Go to Top of Page

Krister K
Starting Member

Sweden
36 Posts

Posted - 18 Dec 2015 :  20:56:51 Show Profile Reply with Quote
quote:
Originally posted by James Ranaldi
Good morning Krister,

Great work . . . . . Your engine sounds wonderful.
I now have a very large smile on my face
Cheers
James




Glad you like it!

Took the car for a quick spin today, runs really good. Lower midrange really benefitted from change of cam.

Saab 96 v4 '75b
Go to Top of Page

Krister K
Starting Member

Sweden
36 Posts

Posted - 21 Dec 2015 :  19:51:35 Show Profile Reply with Quote
Not only has the engine been upgraded, Ive done some on the exterior as well:



Done some adjustments on carb jetting and ignition timing yesterday with pleasing result. No problem engaging fourth @ 2000rpm and it pulls strong to 5500rpm with no hesitation. I can surely go to 6500rpm, but I will put some more miles on the cam/lifters first.

This must be as fun as you can have with your clothes on!?

Saab 96 v4 '75b
Go to Top of Page

Krister K
Starting Member

Sweden
36 Posts

Posted - 13 Jan 2016 :  20:56:11 Show Profile Reply with Quote
Winter is here since a couple of weeks back. We need some kind of traction control... :-)






This is great fun on icy roads! :-D

Saab 96 v4 '75b
Go to Top of Page
Page  of 5Previous Topic Topic Next Topic 
Previous Page | Next Page
 New Topic  Reply to Topic 
 Printer Friendly 
Jump To: 
Snitz Forums 2000
SAAB V4 Forum© 2000-04 Snitz CommunicationsGo To Top Of Page