Dyno Results....
10-08-06, 06:29 PM
#1
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Dyno Results....
Was a decent day i guess, i was rather disapointed with my numbers though....
Mustang Dyno;
227rwhp - 5900rpm
235rwtq - 3600rpm
@ 12psi
It will only hold 6psi after 5500rpm, i have absolutely no idea why....
Oh, and to top things off, i roasted my clutch and it's starting to slip like crazy....
P.S. How do my AFR's look?...
Mustang Dyno;
227rwhp - 5900rpm
235rwtq - 3600rpm
@ 12psi
It will only hold 6psi after 5500rpm, i have absolutely no idea why....
Oh, and to top things off, i roasted my clutch and it's starting to slip like crazy....
P.S. How do my AFR's look?...
10-08-06, 06:39 PM
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If thats on the stock turbo, you should be DAMN proud. On a Dynojet (read: an ACCURATE dyno, Mustang dyno's read HELLA low) you'd be at around 250rwhp and 265ft lb..
Wtf? Something must be wrong with the dyno. Theres no way you can be making more torque than horsepower.
AFR's look a *tad* lean to me..:-O
Edit: Our turbos are old, and undersized. They tend to, unless in new-condition, not hold anything over 8psi at redline.
Wtf? Something must be wrong with the dyno. Theres no way you can be making more torque than horsepower.
AFR's look a *tad* lean to me..:-O
Edit: Our turbos are old, and undersized. They tend to, unless in new-condition, not hold anything over 8psi at redline.
Last edited by adrock3217; 10-08-06 at 06:41 PM.
10-08-06, 06:56 PM
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He is making more torque than HP because he isnt holding boost.
And mustang Dynos report more realistic numbers than dynojets do, and they all you to pull 1/4 mile sims if you like.
In any case you made pretty good numbers there, dont be disappointed.
BC
And mustang Dynos report more realistic numbers than dynojets do, and they all you to pull 1/4 mile sims if you like.
In any case you made pretty good numbers there, dont be disappointed.
BC
10-08-06, 07:04 PM
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Originally Posted by anewconvert
He is making more torque than HP because he isnt holding boost.
And mustang Dynos report more realistic numbers than dynojets do, and they all you to pull 1/4 mile sims if you like.
In any case you made pretty good numbers there, dont be disappointed.
BC
And mustang Dynos report more realistic numbers than dynojets do, and they all you to pull 1/4 mile sims if you like.
In any case you made pretty good numbers there, dont be disappointed.
BC
Uh, he made the "high" torque around 3200RPM - LONG before his boost drops off, and right around the time when most stock turbos hit full boost. Your assumption is wrong...
10-08-06, 07:11 PM
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Probably the dyno was reading wrong, or something O.o
I don't know of ANY turbo rotaries making more torque than horsepower, expect by maybe 1 or 2 ft lbs. Never 8 ftlbs..
Tons of things could come into play, but I would think it was the dyno reading wrong. I mean, this torque is at 3000RPM!! Rotaries don't make torque in low RPM!
I don't know of ANY turbo rotaries making more torque than horsepower, expect by maybe 1 or 2 ft lbs. Never 8 ftlbs..
Tons of things could come into play, but I would think it was the dyno reading wrong. I mean, this torque is at 3000RPM!! Rotaries don't make torque in low RPM!
10-08-06, 07:13 PM
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Originally Posted by adrock3217
Probably the dyno was reading wrong, or something O.o
I don't know of ANY turbo rotaries making more torque than horsepower, expect by maybe 1 or 2 ft lbs. Never 8 ftlbs..
Tons of things could come into play, but I would think it was the dyno reading wrong. I mean, this torque is at 3000RPM!! Rotaries don't make torque in low RPM!
I don't know of ANY turbo rotaries making more torque than horsepower, expect by maybe 1 or 2 ft lbs. Never 8 ftlbs..
Tons of things could come into play, but I would think it was the dyno reading wrong. I mean, this torque is at 3000RPM!! Rotaries don't make torque in low RPM!
you said the AFR's look a little, lean?...
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10-08-06, 08:03 PM
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Originally Posted by adrock3217
Uh, he made the "high" torque around 3200RPM - LONG before his boost drops off, and right around the time when most stock turbos hit full boost. Your assumption is wrong...
See, my assumption is that he peaked boost around the time of peak torque, then started loosing boost thereafter, seeing only 6 psi by 5500 rpms. This would explain the high torque down low, with the high hp being lower than tq. obviously if the turbo wasnt loosing boost the HP and tq numbres would look more classic on the graph.
No where did he say that he held 12 psi until 5500. He just said that at 5500 he was at 6 psi.
BC
10-08-06, 08:06 PM
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do you guys think my AFR's look lean or...?
i thought around the 3500rpm-3900rpm it got a little lean so i added a tick more fuel in that range....
seam ok?...
i thought around the 3500rpm-3900rpm it got a little lean so i added a tick more fuel in that range....
seam ok?...
Last edited by Archangels; 10-08-06 at 08:24 PM.
10-09-06, 01:11 AM
#11
Haven't we ALL heard this
What turbo are you running?
Warning out the *** talk - Doesn't the engine need the most ignition advance and I would assume fuel to prevent detonation at peak torque?
James
Warning out the *** talk - Doesn't the engine need the most ignition advance and I would assume fuel to prevent detonation at peak torque?
James
10-09-06, 01:15 AM
#12
Haven't we ALL heard this
Oh idea on the boost drop off....
When you first start the dyno run your WG is staying shut and building the right boost....however as the engine starts flowing more exhaust....it is actually forcing the WG flapper open before it should be...and it is letting the exhaust bypass.
I would trying putting an extra spring on the WG arm to help hold it shut longer.
I guess you could trouble shoot this by wiring the WG shut...and CARFULLY doing a few runs to see how the boost behaves.
There are pictures of WG actuator rods with springs on them... search for BNR turbos.
James
When you first start the dyno run your WG is staying shut and building the right boost....however as the engine starts flowing more exhaust....it is actually forcing the WG flapper open before it should be...and it is letting the exhaust bypass.
I would trying putting an extra spring on the WG arm to help hold it shut longer.
I guess you could trouble shoot this by wiring the WG shut...and CARFULLY doing a few runs to see how the boost behaves.
There are pictures of WG actuator rods with springs on them... search for BNR turbos.
James
10-09-06, 03:09 PM
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Originally Posted by Wankel7
What turbo are you running?
Warning out the *** talk - Doesn't the engine need the most ignition advance and I would assume fuel to prevent detonation at peak torque?
James
Warning out the *** talk - Doesn't the engine need the most ignition advance and I would assume fuel to prevent detonation at peak torque?
James
oh, and i'm running a stock S5 turbo with ported wastegate....
Last edited by Archangels; 10-09-06 at 03:12 PM.
10-09-06, 03:54 PM
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Meh, I still think your turbo might just be getting worn out. I only know of 2 or 3 people who can hold full boost to redline, and they might just be lucky. The sock turbo is wayyy small, not meant to be boosted high, in the high RPM..
But yeah, It "looks" a little lean at certain points. Especially on that big spike near the end.
I'd go to a different dyno, just for comparison sake.
But yeah, It "looks" a little lean at certain points. Especially on that big spike near the end.
I'd go to a different dyno, just for comparison sake.
10-09-06, 04:09 PM
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Originally Posted by adrock3217
Meh, I still think your turbo might just be getting worn out. I only know of 2 or 3 people who can hold full boost to redline, and they might just be lucky. The sock turbo is wayyy small, not meant to be boosted high, in the high RPM..
But yeah, It "looks" a little lean at certain points. Especially on that big spike near the end.
I'd go to a different dyno, just for comparison sake.
But yeah, It "looks" a little lean at certain points. Especially on that big spike near the end.
I'd go to a different dyno, just for comparison sake.
10-09-06, 10:28 PM
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i should also note that when it's kolder out it spikes at about 14.3psi for a split second that i dont even notice but holds about 13.2-13.5psi throughout until it drops off in higher revvs....
i only know it spikes at 14.3psi because it records the highest boost hit....
do things seam alright?, AFR's and boost?...
i only know it spikes at 14.3psi because it records the highest boost hit....
do things seam alright?, AFR's and boost?...
10-20-06, 02:45 PM
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What type of boost controller do you have?
I think a ball & spring type would help you hold more boost in the upper rpm's.
That is if you are using a bleed type currently.
I think a ball & spring type would help you hold more boost in the upper rpm's.
That is if you are using a bleed type currently.
11-17-06, 08:17 PM
#20
nice
i had kinda same setup so check out mine
https://www.rx7club.com/time-slips-dyno-128/my-dyno-chart-stock-jdm-s5-556866/
boost drop off is normal... for stock turbo
i had kinda same setup so check out mine
https://www.rx7club.com/time-slips-dyno-128/my-dyno-chart-stock-jdm-s5-556866/
boost drop off is normal... for stock turbo
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