A4 Cam Question????
03-06-2002, 10:36 PM
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A4 Cam Question???? Has anyone out there done a cam in an A4 and got it to idle right without tuning? Did you tap the TB or raise the idle speed on the TB?
03-06-2002, 11:44 PM
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Re: A4 Cam Question???? MMS 218 cam with stock heads 362RWHP 373RWTQ. Idles great at 550RPM with 3/16th TB hole. Idles like stock and lope is undetectable at 750rpm's with Speartech tuning.
[ March 06, 2002: Message edited by: Reboot ]</p>
[ March 06, 2002: Message edited by: Reboot ]</p>
03-07-2002, 08:48 AM
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Re: A4 Cam Question???? [quote]Originally posted by Reboot:
<strong>MMS 218 cam with stock heads 362RWHP 373RWTQ. Idles great at 550RPM with 3/16th TB hole. Idles like stock and lope is undetectable at 750rpm's with Speartech tuning.
[ March 06, 2002: Message edited by: Reboot ]</strong><hr></blockquote>
What's MMS? What are the complete specs? It idled great at 550 huh?Is the 3/16th hole in the TB the way it comes stock? Or did you tap it to that?Did you just do the Speartech tuning cause oyu felt like it? Was the car lopey at 550 idle?
[ March 07, 2002: Message edited by: PewterZ ]</p>
<strong>MMS 218 cam with stock heads 362RWHP 373RWTQ. Idles great at 550RPM with 3/16th TB hole. Idles like stock and lope is undetectable at 750rpm's with Speartech tuning.
[ March 06, 2002: Message edited by: Reboot ]</strong><hr></blockquote>
What's MMS? What are the complete specs? It idled great at 550 huh?Is the 3/16th hole in the TB the way it comes stock? Or did you tap it to that?Did you just do the Speartech tuning cause oyu felt like it? Was the car lopey at 550 idle?
[ March 07, 2002: Message edited by: PewterZ ]</p>
03-07-2002, 01:51 PM
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Re: A4 Cam Question???? [quote]Originally posted by PewterZ:
<strong>
What's MMS? What are the complete specs? It idled great at 550 huh?Is the 3/16th hole in the TB the way it comes stock? Or did you tap it to that?Did you just do the Speartech tuning cause oyu felt like it? Was the car lopey at 550 idle?
[ March 07, 2002: Message edited by: PewterZ ]</strong><hr></blockquote>
I bought the cam from MMS (one of the sponsors here). I bought a spare pcm prior to the cam installation in anticipation of a rough idle and stalling problems that never materialized. The idle was a little rough on the stock pcm so I drilled the TB to 3/16ths which took less than 5 minutes, and It idled great with a very slight lope. The idle at 750RPM's with the Speartech pcm makes the lope undetectable.
Unfortunatly I blew my tranny up two days after the cam install so I don't have track numbers but 11's should be no problem now.
The complete specs for my MMS cam are 218/218 .561/.561 114LSA with one dgree of retard ground in to move the power band up.
<strong>
What's MMS? What are the complete specs? It idled great at 550 huh?Is the 3/16th hole in the TB the way it comes stock? Or did you tap it to that?Did you just do the Speartech tuning cause oyu felt like it? Was the car lopey at 550 idle?
[ March 07, 2002: Message edited by: PewterZ ]</strong><hr></blockquote>
I bought the cam from MMS (one of the sponsors here). I bought a spare pcm prior to the cam installation in anticipation of a rough idle and stalling problems that never materialized. The idle was a little rough on the stock pcm so I drilled the TB to 3/16ths which took less than 5 minutes, and It idled great with a very slight lope. The idle at 750RPM's with the Speartech pcm makes the lope undetectable.
Unfortunatly I blew my tranny up two days after the cam install so I don't have track numbers but 11's should be no problem now.
The complete specs for my MMS cam are 218/218 .561/.561 114LSA with one dgree of retard ground in to move the power band up.
03-07-2002, 02:46 PM
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Re: A4 Cam Question???? [quote]Originally posted by Reboot:
<strong>
I bought the cam from MMS (one of the sponsors here). I bought a spare pcm prior to the cam installation in anticipation of a rough idle and stalling problems that never materialized. The idle was a little rough on the stock pcm so I drilled the TB to 3/16ths which took less than 5 minutes, and It idled great with a very slight lope. The idle at 750RPM's with the Speartech pcm makes the lope undetectable.
Unfortunatly I blew my tranny up two days after the cam install so I don't have track numbers but 11's should be no problem now.
The complete specs for my MMS cam are 218/218 .561/.561 114LSA with one dgree of retard ground in to move the power band up.</strong><hr></blockquote>
Oh...I see...wow...you put a pretty high lift cam in there. The one I am looking to put in is a 218 224 .527 .534 on a 114 LSA. I think tapping the TB will do fine also...I guess we'll see. Do you have a converter in the car? Did you have it in there at the time of the Cam install? Having an aftermarket lighting smaller converter has alot to do with the way it'll idle as well.
[ March 07, 2002: Message edited by: PewterZ ]</p>
<strong>
I bought the cam from MMS (one of the sponsors here). I bought a spare pcm prior to the cam installation in anticipation of a rough idle and stalling problems that never materialized. The idle was a little rough on the stock pcm so I drilled the TB to 3/16ths which took less than 5 minutes, and It idled great with a very slight lope. The idle at 750RPM's with the Speartech pcm makes the lope undetectable.
Unfortunatly I blew my tranny up two days after the cam install so I don't have track numbers but 11's should be no problem now.
The complete specs for my MMS cam are 218/218 .561/.561 114LSA with one dgree of retard ground in to move the power band up.</strong><hr></blockquote>
Oh...I see...wow...you put a pretty high lift cam in there. The one I am looking to put in is a 218 224 .527 .534 on a 114 LSA. I think tapping the TB will do fine also...I guess we'll see. Do you have a converter in the car? Did you have it in there at the time of the Cam install? Having an aftermarket lighting smaller converter has alot to do with the way it'll idle as well.
[ March 07, 2002: Message edited by: PewterZ ]</p>
03-07-2002, 03:20 PM
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Re: A4 Cam Question???? I heard the split duration cams don't idle as well as single patterns. I gained 51 RWHP with this cam vs. my previous bolt on dyno sessions.
https://ls1tech.com/ubb/cgi-bin/ulti...c&f=1&t=003525
Yes I did have the TC before and after the cam install.
https://ls1tech.com/ubb/cgi-bin/ulti...c&f=1&t=003525
Yes I did have the TC before and after the cam install.
03-08-2002, 07:38 AM
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Re: A4 Cam Question???? [quote]Originally posted by Reboot:
<strong>I heard the split duration cams don't idle as well as single patterns. I gained 51 RWHP with this cam vs. my previous bolt on dyno sessions.
https://ls1tech.com/ubb/cgi-bin/ulti...c&f=1&t=003525
Yes I did have the TC before and after the cam install.</strong><hr></blockquote>
Man 51 to the wheels....Thats alot of power...did you have heads then? I wonder if Comp makes that grind...the grind you have....Do you use the 918's?Thanks man...you've been a big help.
<strong>I heard the split duration cams don't idle as well as single patterns. I gained 51 RWHP with this cam vs. my previous bolt on dyno sessions.
https://ls1tech.com/ubb/cgi-bin/ulti...c&f=1&t=003525
Yes I did have the TC before and after the cam install.</strong><hr></blockquote>
Man 51 to the wheels....Thats alot of power...did you have heads then? I wonder if Comp makes that grind...the grind you have....Do you use the 918's?Thanks man...you've been a big help.
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03-08-2002, 09:41 AM
#8
Re: A4 Cam Question???? 51 HP from just a 218 cam. <img src="graemlins/gr_bs.gif" border="0" alt="[bullshit]" />
There had to be other factors that contributed to that (e.g. dyno error, weather). I'm not saying that this not the mathematical difference in numbers, only that this is a not a reasonable expectation for what a 218 cam can produce in a bolt-on car.
Pewter, the single pattern and faster ramps of the MMS 218 cam will allow it to idle better than the 218/224 you are considering.
I had a comp 218/218 114 .563 112 I/C cam and at 800 it idled nicely and was undetectable at 850 rpm (no audible lope).
There had to be other factors that contributed to that (e.g. dyno error, weather). I'm not saying that this not the mathematical difference in numbers, only that this is a not a reasonable expectation for what a 218 cam can produce in a bolt-on car.
Pewter, the single pattern and faster ramps of the MMS 218 cam will allow it to idle better than the 218/224 you are considering.
I had a comp 218/218 114 .563 112 I/C cam and at 800 it idled nicely and was undetectable at 850 rpm (no audible lope).
03-08-2002, 09:59 AM
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Re: A4 Cam Question???? [quote]Originally posted by PewterZ:
<strong>
Man 51 to the wheels....Thats alot of power...did you have heads then? I wonder if Comp makes that grind...the grind you have....Do you use the 918's?Thanks man...you've been a big help.</strong><hr></blockquote>
Stock heads and yes I am using the 918's. The day I dyno'd was dry and 70 degrees. My previous dyno numbers were on the same dyno. All nubers were SAE corrected.
I can't explain the 51 RWHP difference, I wasn't expecting that, nor did I expect such a small cam to still be making power at 6500RPM's.
The main difference between the Comp 218/218 and the MMS 218 based on the information on the cam card, is Comps is ground with 4 degrees of advance and has a rated duration of 271. The MMS cam is ground with one degree of retard and has a rated duration of 269. If I understand correctly it makes it idle better and ramp faster and moves the powerband up.
[ March 08, 2002: Message edited by: Reboot ]</p>
<strong>
Man 51 to the wheels....Thats alot of power...did you have heads then? I wonder if Comp makes that grind...the grind you have....Do you use the 918's?Thanks man...you've been a big help.</strong><hr></blockquote>
Stock heads and yes I am using the 918's. The day I dyno'd was dry and 70 degrees. My previous dyno numbers were on the same dyno. All nubers were SAE corrected.
I can't explain the 51 RWHP difference, I wasn't expecting that, nor did I expect such a small cam to still be making power at 6500RPM's.
The main difference between the Comp 218/218 and the MMS 218 based on the information on the cam card, is Comps is ground with 4 degrees of advance and has a rated duration of 271. The MMS cam is ground with one degree of retard and has a rated duration of 269. If I understand correctly it makes it idle better and ramp faster and moves the powerband up.
[ March 08, 2002: Message edited by: Reboot ]</p>