All motor LSVTEC Question
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From: east coast performance and tuning, jacksonville, nc
Ok I went to the dyno last night and dynoed my car.... It was very upsetting....
126 whp
I dont even remember the torque i was so pissed
My set up is as follows....
LS bottom
ACL Bearings
Rod Studs, Main Studs, Head Studs
P30 pistons
LS Rods
GSR Head with b16 cams (IS this hurting me with those cams?)
STR Intake Mainfold (Is this hurting me?)
FPR set at 43 at idle
OBD1 PRelude Injectors
255HP Fuel pump
VAFC2
DC 4-1 Header
2.5 Exhaust all the way back
AEM CAI
I am also missing the torque mount that bolts up to the block, ont eh drivers side of the car.... Will that affect my numbers?
I think that is about it.... My Air fuel was pretty dam straight, 13.1 to 13.8 all the way across the board, that is why i didnt even feel like posting the dyno chart.... Vtec was set at 5200.... I just dont get it, why in the world could my numbers be so bad?????
Any ideas would be very helpful......... Thanks Alot
Modified by UJLSMoFo at 6:13 AM 8/31/2004
126 whp
I dont even remember the torque i was so pissed
My set up is as follows....
LS bottom
ACL Bearings
Rod Studs, Main Studs, Head Studs
P30 pistons
LS Rods
GSR Head with b16 cams (IS this hurting me with those cams?)
STR Intake Mainfold (Is this hurting me?)
FPR set at 43 at idle
OBD1 PRelude Injectors
255HP Fuel pump
VAFC2
DC 4-1 Header
2.5 Exhaust all the way back
AEM CAI
I am also missing the torque mount that bolts up to the block, ont eh drivers side of the car.... Will that affect my numbers?
I think that is about it.... My Air fuel was pretty dam straight, 13.1 to 13.8 all the way across the board, that is why i didnt even feel like posting the dyno chart.... Vtec was set at 5200.... I just dont get it, why in the world could my numbers be so bad?????
Any ideas would be very helpful......... Thanks Alot
Modified by UJLSMoFo at 6:13 AM 8/31/2004
I dont know why your #'s are so low. Maybe your motor is losing compression. I would do a compression check, and i would get rid of that STR Manifold. Also iif your motor is on making that hp, couldnt you tell that it was feeling really slow before you even decided to go to the dyno?
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From: east coast performance and tuning, jacksonville, nc
I was thinking that the manifold would hurt me..... It is the only thing i have right now tho.... I did a compression test before and it was 250 all the way acorss the board. Also I just finished brekaing it in, didnt even tkae it to vtec until i got off the dyno.... But it doesnt feel slow, and i just pulled out b16 our of my car that made 155 whp... And it felt faster then that one...
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From: east coast performance and tuning, jacksonville, nc
What do you think about the cams? Are they hurting me? I searched and only found one person talking baout them, and they said that it made there car run like crap?
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From: east coast performance and tuning, jacksonville, nc
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GoldenEagleMfg.com »</TD></TR><TR><TD CLASS="quote">That manifold was designed to be used in a turbo application. Trust me, I designed it! Rip that thing off and go get a Skunk2 mani. You will love yourself for it!</TD></TR></TABLE>
I understand that the manifold sucks, but that is all i have right now.... My question is.... What would make me have such low numbers???? I was expecting at least 170, and i dont think that the manifold could cuase that much loss of power......
I understand that the manifold sucks, but that is all i have right now.... My question is.... What would make me have such low numbers???? I was expecting at least 170, and i dont think that the manifold could cuase that much loss of power......
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B16 cams arent hurting u.....lose the Intake Manifold ...and do a compression test...hondata is better but there no reason y u cant make good HP with the V-afc....v-afc isnt the problem
Maybe the dyno was set incorrectly? You can always mess with their settings and get weird numbers.
And before you said you didn't take it into vtec until you got off the dyno? I would assume that you were breaking it in on a dyno, but just incase, no vtec = no power.
And before you said you didn't take it into vtec until you got off the dyno? I would assume that you were breaking it in on a dyno, but just incase, no vtec = no power.
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From: east coast performance and tuning, jacksonville, nc
Vtec was comming in...... I had it set at 5200 , that seemed the best on the dyno, I advanced my timming 4 degrees and it liked that.... Also would not having that torque mount hurt my dyno numbers, due to not putting all the power down to the wheels?
B16 cams are hurting your power a little bit, gsr cams have bigger lobes, your comprestion is around 11.5:1, so with good cams and good tunning with the vafc you should hit 180whp. Im using the VAFC on my lsvtec and i made 219whp 158lbs of torque.
Where did you get the B16 cams from...? They may be those shitty automatic grind cams for the JDM B16 motor... If so, then your problem prolly lies there...
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From: east coast performance and tuning, jacksonville, nc
It was a Dyno Jet....... Do you guys think that just with not having gsr cams and the STR intake manifold are making me loose that much power? I mean come on 125 is ****... for a ls vtec...
Yeah like Manuel said, a stock b16 head on a stock b18b block would put out 140hp+, more like 150. UJLSMoFo has full bolt-ons and rather high compression with P30 pistons, he should be making FAR more than 126hp!!!
I would highly suggest doing a compression and leakdown tests. In 10 minutes you can eliminate a lot of problems with these tests. Your A/F you said was good, so you can't be tuned poorly enough to lose 50hp...
the mystery continues..
I would highly suggest doing a compression and leakdown tests. In 10 minutes you can eliminate a lot of problems with these tests. Your A/F you said was good, so you can't be tuned poorly enough to lose 50hp...
the mystery continues..
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From: east coast performance and tuning, jacksonville, nc
Compression test was 245 across theo board...........
So basically eveyrone is telling me that the intake manifold and the cams are making me loose 50 hrsp...?? To me that is just a little hard to believe......
Also i have seen people with this setup making anywere from 170-190.... and it kills me to see my numbers...
So basically eveyrone is telling me that the intake manifold and the cams are making me loose 50 hrsp...?? To me that is just a little hard to believe......
Also i have seen people with this setup making anywere from 170-190.... and it kills me to see my numbers...
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From: east coast performance and tuning, jacksonville, nc
I was so pissed at the dyno sheet i told him i didnt want it....
Timming was set at 16 degrees........ I have no cam gears.......
Timming was set at 16 degrees........ I have no cam gears.......
why is vtec set so high with b16 cams?
vtec should be set at less than 4400
with vtec crossover that high your loosing lots of power from 4400 to you vtec x over
vtec should be set at less than 4400
with vtec crossover that high your loosing lots of power from 4400 to you vtec x over
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From: east coast performance and tuning, jacksonville, nc
you have prooven this on a dyno? I will be on there once i get a gsr manny and gsr cams..... and i will try it...
sounds like the dyno to me man. I dont think your Vtec crossover would affect your peak HP. It would prob affect your power curve. My buddy dynoed his LSvtec : B16A head, B18A1 block, B16 pistons, intake, dc header, test pipe, exhaust, throttle body and made around 163hp on the untuned PR3. On my lsvtec I made 176 on a short ram with my untuned PR3 runnin pretty rich. I then switched to a cold air with 2.75" piping and went to 186whp/136whp at a better AF of around 13.8 then richening up past 6500k (11.8 or so ) I have CTR pistons on mine as far as internals go. Your compression is lower but It shouldnt affect it THAT much. do you have the cat on still? do you know if its workin properly? my friends B20 did something like that. he made some really bad power and didnt know why, then he put on a test pipe and made like 30whp difference cuz his cat had totally crapped out on him. hope this helps some
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