4g61t.org :: 4g61t dyno's

Basically I am wanting to gather a little infomation from the people who are running 4g61t's and what sort of numbers they were/are making.

Please list all power related mods, and motor condition if known.

I'll go first for an example of what I'm looking for.

Stock bottom end 4g61t, rebuilt w/5K
4g67t head, ported & polished exhaust ports.
HKS 272's, stock springs, head gasket, and bolts.
60 mm t/b on ported 4g67t intake manifold
Slowboy racing cast exhaust manifold, ported and polished
Tial 38 mm W/G
PTE 50 trim BB .76 A/R exh
Evo 560 cc inj
Walbro 190 w/ 30 amp re-wire
AFC 2, 90 DSM turbo ECU
Evo 8 FMIC, 2.5" IC piping
2G MAF, HKS SS BOV
3" turbo back exhaust
24 psi on 91 oct pump gas

Uncorrected numbers where 307.94 whp/ 248.06 wtq @ 24 psi. Elevation at the dyno is right at 6,000 ft so I would venture a more accurate correction around 1.17 for those who are curious to calculate it.

Edit: I should also note that the target A/F was at 12.0 : 1 but after 6,500 rpms I was at 12.5 : 1 due to lack of fuel pump. 4* base timing.

If you need to borrow a 90 eprom, mine is socketed and ready to go.

560's are only good for 31lbs/min at 100% duty cycle on E85. 25lbs/min at 80%.

I think currently you have the highest known out there. But just to let you know, I am going to build my car around the 4G61 as well. And if or when it goes I will throw a 2.0L together. So watch out Jack. I hope by spring time to have some numbers.

Steven

Small side note: for comparison what type of car and drag coefficient do you use for your cars? The guys at KVR used a 91 Honda Civic drag coefficient for my car IIRC.

Quote:

Small side note: for comparison what type of car and drag coefficient do you use for your cars? The guys at KVR used a 91 Honda Civic drag coefficient for my car IIRC.

Shrug?

I'm curious to know why my numbers are so low, but I suspect boost leak. I need someone to analyse my .DBA file from my Palm - ie run Palm Emulator or upload to their Palm and see what is on the up and up with my numbers from my first Dyno run.

I didn't break but the numbers are low for a modded 2.0T.

Author:	dragstr4g61t [ Sat Sep 29, 2007 11:01 pm ]
Post subject:	4g61t dyno's
Basically I am wanting to gather a little infomation from the people who are running 4g61t's and what sort of numbers they were/are making. Please list all power related mods, and motor condition if known. I'll go first for an example of what I'm looking for. Stock bottom end 4g61t, rebuilt w/5K 4g67t head, ported & polished exhaust ports. HKS 272's, stock springs, head gasket, and bolts. 60 mm t/b on ported 4g67t intake manifold Slowboy racing cast exhaust manifold, ported and polished Tial 38 mm W/G PTE 50 trim BB .76 A/R exh Evo 560 cc inj Walbro 190 w/ 30 amp re-wire AFC 2, 90 DSM turbo ECU Evo 8 FMIC, 2.5" IC piping 2G MAF, HKS SS BOV 3" turbo back exhaust 24 psi on 91 oct pump gas Uncorrected numbers where 307.94 whp/ 248.06 wtq @ 24 psi. Elevation at the dyno is right at 6,000 ft so I would venture a more accurate correction around 1.17 for those who are curious to calculate it. Edit: I should also note that the target A/F was at 12.0 : 1 but after 6,500 rpms I was at 12.5 : 1 due to lack of fuel pump. 4* base timing.

Author:	biglady112 [ Sun Sep 30, 2007 6:28 pm ]
Post subject:
Great job bobby. Jason is going to fire up his new 50 trim tomorrow. He is on a stock 2.0L though. So we will see what can be had with dsmlink and E85. I think with your weight you have him beat. I am shooting for over 25psi though. Going to the track before it closes? I know you have those slicks. Steven

Author:	dragstr4g61t [ Sun Sep 30, 2007 6:50 pm ]
Post subject:
I've installed a 255 pump and want to up the injector size to run e85. I got a keydriver chip but my eprom ecu decided to fry itself right before I sent it out to get socketed and new caps...frustrating. I want 350-360 uncorrected whp, or till this turbo is max'd out. I wonder if I have the highest whp 4g61t as it sits.

Author:	biglady112 [ Sun Sep 30, 2007 7:08 pm ]
Post subject:
If you need to borrow a 90 eprom, mine is socketed and ready to go. 560's are only good for 31lbs/min at 100% duty cycle on E85. 25lbs/min at 80%. I think currently you have the highest known out there. But just to let you know, I am going to build my car around the 4G61 as well. And if or when it goes I will throw a 2.0L together. So watch out Jack. I hope by spring time to have some numbers. Steven

Author:	quikgt [ Sun Sep 30, 2007 7:48 pm ]
Post subject:
This was last year on a Mustang dyno. stock 4g61t top & bottom end 250k(155,000 miles) 1g cams on stock h/g & valves 60mm TB with Cyclone Intake(non dual runner) 650 injectors walbro 190 3" GM maf draw thru with maf-t v2.01 ported 2g ex/m & ported 2g O2 3" mandrel exhaust, hi-flo cat, slp muffler 3" inlet 2 2.5" outlets ebay FMIC evo 16g, ported by sbr stock BOV, all hard piping catch can 25 psi, 94 pump 280 whp--256 tq!! shortly after this the original h/g blew while trying to do a burnout with sticky tires on new pavement=not good So now I'm on a completly built 2.0. If I had known there was a problem with the used 2.0 I paid good money for, I just would have rebuilt the '61t.

4g61t.org http://www.4g61t.org/forum/

4g61t dyno's http://www.4g61t.org/forum/viewtopic.php?f=18&t=22628	Page 1 of 4

Author:	hemi-colt [ Sun Sep 30, 2007 8:19 pm ]
Post subject:	Re: 4g61t dyno's
Quote: Basically I am wanting to gather a little infomation from the people who are running 4g61t's and what sort of numbers they were/are making. Please list all power related mods, and motor condition if known. I'll go first for an example of what I'm looking for. Stock bottom end 4g61t, rebuilt w/5K 4g67t head, ported & polished exhaust ports. HKS 272's, stock springs, head gasket, and bolts. 60 mm t/b on ported 4g67t intake manifold Slowboy racing cast exhaust manifold, ported and polished Tial 38 mm W/G PTE 50 trim BB .76 A/R exh Evo 560 cc inj Walbro 190 w/ 30 amp re-wire AFC 2, 90 DSM turbo ECU Evo 8 FMIC, 2.5" IC piping 2G MAF, HKS SS BOV 3" turbo back exhaust 24 psi on 91 oct pump gas Uncorrected numbers where 307.94 whp/ 248.06 wtq @ 24 psi. Elevation at the dyno is right at 6,000 ft so I would venture a more accurate correction around 1.17 for those who are curious to calculate it. Edit: I should also note that the target A/F was at 12.0 : 1 but after 6,500 rpms I was at 12.5 : 1 due to lack of fuel pump. 4* base timing.

Author:	Flying Eagle [ Sun Sep 30, 2007 8:19 pm ]
Post subject:
Small side note: for comparison what type of car and drag coefficient do you use for your cars? The guys at KVR used a 91 Honda Civic drag coefficient for my car IIRC.

Author:	hemi-colt [ Sun Sep 30, 2007 8:20 pm ]
Post subject:
Quote: If you need to borrow a 90 eprom, mine is socketed and ready to go. 560's are only good for 31lbs/min at 100% duty cycle on E85. 25lbs/min at 80%. I think currently you have the highest known out there. But just to let you know, I am going to build my car around the 4G61 as well. And if or when it goes I will throw a 2.0L together. So watch out Jack. I hope by spring time to have some numbers. Steven

Author:	biglady112 [ Sun Sep 30, 2007 9:03 pm ]
Post subject:
I'm not stupid. Your stupid. And ugly. Hea, I can wish right. I have a running engine, might as well use it. Steven

Author:	dragstr4g61t [ Sun Sep 30, 2007 11:29 pm ]
Post subject:
Its a good thing that there are a lot of Emoticons or Davis wouldn't be able to communicate. Read that bitch.

Author:	biglady112 [ Sun Sep 30, 2007 11:36 pm ]
Post subject:
That is some funny shit. I like it Bobby. When do I get a ride? Steven

Author:	dragstr4g61t [ Sun Sep 30, 2007 11:46 pm ]
Post subject:
Just need to get it through emissions and get the exhaust finished up before it see's any real street time. I'm actually thinking of running a 50/50 mix of e85/91 oct with 850 cc inj. Should be able to run close to 30 psi with proper tuning, maybe more.

Author:	Flying Eagle [ Mon Oct 01, 2007 1:30 am ]
Post subject:
Quote: Small side note: for comparison what type of car and drag coefficient do you use for your cars? The guys at KVR used a 91 Honda Civic drag coefficient for my car IIRC. Shrug? I'm curious to know why my numbers are so low, but I suspect boost leak. I need someone to analyse my .DBA file from my Palm - ie run Palm Emulator or upload to their Palm and see what is on the up and up with my numbers from my first Dyno run. I didn't break but the numbers are low for a modded 2.0T.

Author:	quikgt [ Mon Oct 01, 2007 7:36 am ]
Post subject:
Quote: Quote: Small side note: for comparison what type of car and drag coefficient do you use for your cars? The guys at KVR used a 91 Honda Civic drag coefficient for my car IIRC. Shrug? I'm curious to know why my numbers are so low, but I suspect boost leak. I need someone to analyse my .DBA file from my Palm - ie run Palm Emulator or upload to their Palm and see what is on the up and up with my numbers from my first Dyno run. I didn't break but the numbers are low for a modded 2.0T. I missed this, where is the post with your Dyno #'s?

Author:	Flying Eagle [ Mon Oct 01, 2007 9:08 am ]
Post subject:
New post to follow in another thread, but every set of AA batteries I have in the house won't keep my camera alive long enough to download the 1 picture of my 2 dyno plot sheets. Wade, what model of car do they test your Colt under?

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