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Subject: "stage 2 crower cam advancement" Previous topic | Next topic
rs_sleeper98Aug-22-06 01:19 PM
Member since Jan 01st 2006
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#100564, "stage 2 crower cam advancement"


          

ok im running stage 2 crower cams, titanium springs and retainers, and aem adjustables. now i made roughly 4-5 hp on advancing intake 2 deg. how much further would i be able to advance without risking bent valves?

  
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BlizareAug-23-06 06:41 AM
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#100584, "RE: stage 2 crower cam advancement"
In response to Reply # 0



          

I wouldn't go any further really. and I mean, for 4 HP emoji


I eat emo kids for breakfast

1995 Eagle Talon (SOLD)
72' SuperBeetle
72' Standard Beetle
56' Deluxe Beetle

  
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ModeratorbullettdsmAug-23-06 10:16 AM
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#100592, "RE: stage 2 crower cam advancement"
In response to Reply # 1

          

I'm doing 4 degrees and I have the crower 2's, 10.5 Je's, and took .020 off head. I went from 0 to 5 degrees (in increments) while on the dyno and there was a considerable difference for me in the top end and torque. Put it this way; you can put your timing belt on one tooth off and not hit. If I remember correctly that is like an 8 degree difference (? Please correct me if I'm wrong but I believe it was 7 or 8). So I believe that you have room but you should do it on the dyno because you are going to see the results as they start to level off and go down.

MB

Captain Caveman

96 RS Turbo 11.414 @ 119.62 MSNS, Crower 2 NA cams, BW366, 10.5 comp, UDP, 60mm TB, W/A intercooler, 3.55 tranny 567.9whp 430tq
97 RS NA 13.188 @ 103.87 MSnS powered 12.5 comp, Crower 3's and 219.4whp with 175tq
98 RS DD 12.5 comp on stock ECU, LTH, Crower 2's, Koni, GC, Hypercoil, DG hats
99 OZ 5sp Stocker 15.856 @ 85.97
99 GS stocker auto 17.7@77mph!

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BlizareAug-23-06 01:59 PM
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#100604, "RE: stage 2 crower cam advancement"
In response to Reply # 2
 Aug-23-06 02:01 PM by Blizare



          

I can't find anything in the search about 1 tooth off being 8 degrees. I think it's less than that but hey, do what ya wanna do. emoji

EDIT: I just don't see the search for HP being worthwhile when your messing with shit like cam timing for 4 HP.(more or less the risk) ? Why don't you have a turbo and make it easy on yourself?


I eat emo kids for breakfast

1995 Eagle Talon (SOLD)
72' SuperBeetle
72' Standard Beetle
56' Deluxe Beetle

  
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totaleklipse97Aug-23-06 05:23 PM
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#100608, "RE: stage 2 crower cam advancement"
In response to Reply # 3



          

Originally posted by Blizare
I can't find anything in the search about 1 tooth off being 8 degrees. I think it's less than that but hey, do what ya wanna do. emoji EDIT: I just don't see the search for HP being worthwhile when your messing with shit like cam timing for 4 HP.(more or less the risk) ? Why don't you have a turbo and make it easy on yourself?


That's not really the attitude to bring around. There was a time when your car was N/A and 4hp is 4hp more than you had before.

If you haven't milled the head substantially then I wouldn't worry too much about a *few* degrees here and there. I have my head milled 0.038 and i advanced my stock cams by 3* on intake and didn't bend a valve until my timing belt jumped 2-3 teeth. So even with substantial milling those few degrees didn't matter. Now if your using domed pistons for higher compression ratios then I would look more into it. otherwise have fun tuning your cams.

Just FYI* You might want something to pull fuel since more than likely you are just dumping fuel right now using crower 2's. Casbon is using a S-AFC and it's quite easy to use. It basically just changes the signal sent from the MAP sensor. Might cause some timing advance but... with N/A nothing to serious to worry about. You would be more likely to get extra HP by tuning your A/F ratio than messing with those cam gears a few degrees.

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rs_sleeper98Aug-24-06 11:30 AM
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#100620, "RE: stage 2 crower cam advancement"
In response to Reply # 4

          

Originally posted by totaleklipse97
Originally posted by Blizare I can't find anything in the search about 1 tooth off being 8 degrees. I think it's less than that but hey, do what ya wanna do. emoji EDIT: I just don't see the search for HP being worthwhile when your messing with shit like cam timing for 4 HP.(more or less the risk) ? Why don't you have a turbo and make it easy on yourself?
That's not really the attitude to bring around. There was a time when your car was N/A and 4hp is 4hp more than you had before. If you haven't milled the head substantially then I wouldn't worry too much about a *few* degrees here and there. I have my head milled 0.038 and i advanced my stock cams by 3* on intake and didn't bend a valve until my timing belt jumped 2-3 teeth. So even with substantial milling those few degrees didn't matter. Now if your using domed pistons for higher compression ratios then I would look more into it. otherwise have fun tuning your cams. Just FYI* You might want something to pull fuel since more than likely you are just dumping fuel right now using crower 2's. Casbon is using a S-AFC and it's quite easy to use. It basically just changes the signal sent from the MAP sensor. Might cause some timing advance but... with N/A nothing to serious to worry about. You would be more likely to get extra HP by tuning your A/F ratio than messing with those cam gears a few degrees.


i already have a s-afc and its tuned with the cams. i had to richen up the top end a little. thanks for the input guys and like totaleklipse97 said... i think you might be in the wrong forum to suggest boost over internal upgrades.... 2gNT...

  
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