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Old 08-24-2018, 04:57 AM   #1
c.slopsma
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Default Most cam usable as daily driver. 12,5:1cr double solex

Goodday!

I was getting tired of driving around with the slow piece of crap under the hood, So i modified the engine. 2.5 mm shaved off the head on a b23e bottom. Wich gets me 12.5:1 cr. Combined with the gt6 cam, ported head and double 45 solex carbs it was a blast to drive with the 180 hp.

BUT...

no where near drive-able. the engine would spit es much fuel out off the inlet as the exhaust below 3k rpm. Running only right at full throttle is not quite ideal.

So, now i'm thinking about getting a cam ground in sweden. it must be daily usable, Teach me on usable cams please!
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Old 08-24-2018, 11:07 AM   #2
c.slopsma
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Default Found something which might be interesting

I emaild KG and they recommended the original H grind for this setup. I took a look and saw they only sell H and then full race cams, So there recommendation seems logical. Nevertheless i would like something a bit rougher that oem delivered.

So this was the cam i had and sold again becouse it wasn't usable.

GT6 cam:

Intake - 290* at .020", 268* at .050", .471" max lift
Exhaust - 290* at .020", 268* at .050", .472" max lift
L.S.A. - 108*

I found this company who does regrinds, Folkraceshop.se. They appear to be having at least two grinds that seem interesting.

FS280:
Duration: 280° vid körspel, 245° vid 1mm lyft
Lyft: 11.5mm
Nockvinkel: 110°
Reducering av bascirkel: 1.8-2mm
TDC-Lyft: 2.5-2.7mm

FS296
duur: 296 ° bij het racegame, 276 ° bij 1 mm lift
lift: 12.2mm
Nock hoek: 108 °
Reductie van de basiscirkel: 2.6mm
TDC lift: 3.7-4.2mm

FSV30
Duration: 298° vid körspel, 260° vid 1mm lyft
Lyft: 11.5mm
Nockvinkel: 108°
Reducering av bascirkel: 2.6mm
TDC lyft: 3.5-3.7mm

So the fs296 seems to be even more agressive as the gt6, So it should not be usable i guess. Is there any more info on the original H cam profile ?
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Old 08-24-2018, 02:00 PM   #3
TurboDenny
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Here is a page displaying a bunch of cam profiles.
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Old 08-24-2018, 04:02 PM   #4
dl242gt
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Enem has a wide range of cams for high output turbo and high performance n/a all the way down to street performance cams. I would suggest something like a V16. Powerband starts at 2500 and goes to 6500 rpms. Or for even milder street engine a V15. There are also other good choices. http://enem.se/produkter.asp
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Old 08-25-2018, 10:11 AM   #5
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H and K have around 11.9 mm lift and around 270 duration with 110 LSA.

https://turbobricks.com/resources.php?content=camspec

K is a nice cam voor een daily driver! I have one in my 240 glt.

The H is the cam of choice for both the volvo 360 cup and Volvo originals cup rally cars.
Both the H and K should work well in a high compression naturally aspirated engine.
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Old 08-26-2018, 09:29 PM   #6
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Out of curiousity, what kind of ignition system are you running?
How many degrees of timing advance at idle and at full advance?
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Old 08-27-2018, 07:37 AM   #7
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Originally Posted by vwbusman66 View Post
Out of curiousity, what kind of ignition system are you running?
How many degrees of timing advance at idle and at full advance?
I was running it with an original ignition. I modified the weights to run 15deg at idle and 35 all in at +- 3800. No vacuum advance. Did use a msd rev limiter set at 7k.

For now iam looking for a programmable ignition. Probably going to use efignition to run 4 seperate coils. Not tossing the carb's at the moment dough.

I've had contact with the guys from Folkrace and they recommended the FS280 as being usable as a daily driver. I'd love to hear some more stories from the guys drove something like that.
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Old 08-31-2018, 05:45 AM   #8
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Hi
For a bit sporty cams u might want to check AGAP (swe) or CAT cams(belg) or dbilas..
If all goes well i would like to order a custom grind cam from AGAP.. 12.2-12.5 lift and 285 degrees of duration.
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Old 08-31-2018, 03:07 PM   #9
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If you want the party to start a bit earlier something like a enem K13 or V16 n/a cams should work for what you are asking.

Last edited by dl242gt; 08-31-2018 at 03:07 PM.. Reason: add info
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Old 08-31-2018, 08:47 PM   #10
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Sounds like the carb jetting isn't right for the engine.
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Old 09-08-2018, 04:35 PM   #11
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Quote:
Originally Posted by c.slopsma View Post
So the fs296 seems to be even more agressive as the gt6, So it should not be usable i guess. Is there any more info on the original H cam profile ?
http://forums.turbobricks.com/showthread.php?t=337956

How's that?

Last edited by shoestring; 09-08-2018 at 04:47 PM..
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Old 09-12-2018, 04:31 PM   #12
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Quote:
Originally Posted by volvorelix View Post
Sounds like the carb jetting isn't right for the engine.
or maybe those -2,5mm from the head were not compensated at the cam? (timing)
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Old 09-14-2018, 08:12 AM   #13
c.slopsma
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Quote:
Originally Posted by shoestring View Post
Quote:
Originally Posted by Janspeed View Post
or maybe those -2,5mm from the head were not compensated at the cam? (timing)

Verry nice info you got there. No idea why i didn't find that wile searching. The timing was compensated, made an adjustable timing wheel for it. The plans already changed again. i decided to go standalone & Throttle bodies with a slightly hotter cam again.


Duration of driving game 298 degrees
Cam lift 11.5mm
Nock angle 108 degrees
TDC lifts approximately 3.5-3.7mm
Valve 0.35mm
Advantage track on camshaft: Yes
Needed lasch cap: Yes, 3mm thick is recommended
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Old 09-14-2018, 08:17 AM   #14
c.slopsma
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This was the timing gear i made:



Small manifold teaser.


Last edited by c.slopsma; 09-14-2018 at 08:23 AM..
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