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408 Fuel System
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10sec.et
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Joined: 29 Mar 2006
Posts: 3473
Location: Houston,Texas
346658.74 points


1969 Oldsmobile Cutlass

PostPosted: Sat Jun 28, 2014 1:03 am    Post subject: Reply with quote

im glad to see you got it sorted out. as of recent, i dont like too many of the aftermarket efi setups. they all seem to have their issues. i think ultimately you would have just traded one set of problems for another.
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af2 wrote:
It seems we can look at our magical Balls and come up with a fix?

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Paul P
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Joined: 15 Aug 2002
Posts: 2404
Location: Townsend, Mass.
81616.60 points


1971 Chevrolet Chevelle

PostPosted: Tue Jul 01, 2014 6:24 pm    Post subject: Reply with quote

Confirmed the July 12th appointment at ESP 9am. Tach signal to the dyno might be a problem as I am splitting the MSD already with a tach adapter and tach. They also need a signal off the box. Maybe it will work.... Anyway with what I have for fuel pressure if the curve is ok then I should be able to dial it in quickly if not there might be some fuel pressure adjustments in the process needed to get it right. At least it will be safely done without blasting on the street.

Now I just have to hope that it doesn't rain...

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2001 Focus 2.0 Zetec
stock cams, bolt-ons and tune
15.63@87 MPH 1/4mi

1971 - Chevelle 408 SBC N/A
6.86@102.5 MPH 1/8mi
10.78@122 MPH 1/4mi
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SMOKEmUP
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Joined: 30 May 2002
Posts: 3169

65097.54 points


1979 Chevrolet Camaro

PostPosted: Thu Jul 10, 2014 11:03 am    Post subject: Reply with quote

As you know I'm busy as hell but I'll try to meet you up there. I was hoping to get the 02 Z on the dyno as well but I doubt that will happen for Saturday.
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Paul P
Member


Joined: 15 Aug 2002
Posts: 2404
Location: Townsend, Mass.
81616.60 points


1971 Chevrolet Chevelle

PostPosted: Fri Jul 11, 2014 10:17 am    Post subject: Reply with quote

That would be cool. Good thing I checked the valves last night. One Jesel rocker adjuster had backed off and clearance was getting pretty large at .129".... Shocked Everything is tight and torqued up per their specs. See you there if time allows. I know you have a lot going on.
_________________
2001 Focus 2.0 Zetec
stock cams, bolt-ons and tune
15.63@87 MPH 1/4mi

1971 - Chevelle 408 SBC N/A
6.86@102.5 MPH 1/8mi
10.78@122 MPH 1/4mi
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Paul P
Member


Joined: 15 Aug 2002
Posts: 2404
Location: Townsend, Mass.
81616.60 points


1971 Chevrolet Chevelle

PostPosted: Sat Jul 12, 2014 12:49 pm    Post subject: Reply with quote

Car was on the dyno. Tune was close. Needed to back off the mid-range and max out the Power 1 main jet setting to get it tuned. Fuel system did work with a conservative 12.25 at the top end. Max power was 435HP/405TQ to the wheels. Timing adjustments yielded a bit too. Oddly it liked less timing. 34 was base max then I went to 37 where i popped just slightly on the top end. Backed it down to 32 degrees and it sang nicely with 14HP gain. So it was a simple 1 hour deal and I know at least it is a good tune with some potential to take air from the cowl which will lean it out a bit as well as temp changes. My WB gauge was reading 13.3-13.6 when theirs was in the 12.0 range. ESP was using an NGK WB sensor which doesn't change as it fails like the Bosch that I have in the MTXL. The Bosch will eventually fail and I'll change it to see if it reads true to the numbers I saw on the dyno at some point.

I was temped to do a NO2 pull but maybe next time.

Paul

_________________
2001 Focus 2.0 Zetec
stock cams, bolt-ons and tune
15.63@87 MPH 1/4mi

1971 - Chevelle 408 SBC N/A
6.86@102.5 MPH 1/8mi
10.78@122 MPH 1/4mi
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Paul P
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Joined: 15 Aug 2002
Posts: 2404
Location: Townsend, Mass.
81616.60 points


1971 Chevrolet Chevelle

PostPosted: Tue Aug 12, 2014 11:28 am    Post subject: Reply with quote

Did some test hits from 2500 up in high gear with the Logworks 3 and MTX-L. This was the same as the chassis dyno so I can compare the curve. It worked mint. I am slowly pulling up the FAT fuel curve. Getting closer.
Paul

_________________
2001 Focus 2.0 Zetec
stock cams, bolt-ons and tune
15.63@87 MPH 1/4mi

1971 - Chevelle 408 SBC N/A
6.86@102.5 MPH 1/8mi
10.78@122 MPH 1/4mi
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SMOKEmUP
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Joined: 30 May 2002
Posts: 3169

65097.54 points


1979 Chevrolet Camaro

PostPosted: Tue Aug 12, 2014 1:47 pm    Post subject: Reply with quote

Cool. Will you be heading up to the track soon?
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clay
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Joined: 24 Nov 2002
Posts: 3209
Location: South Carolina
318129.23 points


1972 Chevrolet Nova

PostPosted: Tue Aug 12, 2014 5:23 pm    Post subject: Reply with quote

Dang - I don't know how I missed this post when you went to the dyno. Good numbers! On the widebands it's almost like you have to learn each of them to know what afr range to be in. I ran my turbo setup in the high 10's which should have been really rich but there was never a sign of it. Also tuned a buddies 540 to the low 12's before we took it to the track. Figured it was safe and after getting timing dialed in we went down one jet size front and rear. Everything slowed down - 60', e.t., and m.p.h. so maximin power n/a on my wideband looks like about 12 flat. I've gone to just using mine if I have a problem or just to get in the ballpark so I don't kill something then it's whatever makes the most power. Glad everything looks like it's working out with the Projection after the aggravation you had with it. Clay
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Paul P
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Joined: 15 Aug 2002
Posts: 2404
Location: Townsend, Mass.
81616.60 points


1971 Chevrolet Chevelle

PostPosted: Wed Aug 13, 2014 4:44 pm    Post subject: Reply with quote

Yeah now I have to buy more fuel! Laughing $632 for the barrel for C12 damn $11.70/gal ....

Hope to get this close enough for the track to be next. Not sure exactly when but it would be nice if it was cooler.

_________________
2001 Focus 2.0 Zetec
stock cams, bolt-ons and tune
15.63@87 MPH 1/4mi

1971 - Chevelle 408 SBC N/A
6.86@102.5 MPH 1/8mi
10.78@122 MPH 1/4mi
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SMOKEmUP
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Joined: 30 May 2002
Posts: 3169

65097.54 points


1979 Chevrolet Camaro

PostPosted: Thu Aug 14, 2014 1:11 pm    Post subject: Reply with quote

WOW Shocked $11.70/gal.
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Stop running from your pain and embrace your pain. Your pain is going to be a part of your prize.

I challenge you to push yourself.
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Big Dave
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Joined: 04 Dec 2005
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Location: Tampa Florida
119973.02 points



PostPosted: Fri Aug 15, 2014 9:40 am    Post subject: Reply with quote

I recommend buying race gas in five gallon pales instead of the 55 gallon drum.

It goes bad so fast due to the lighter aromatics (toluene and Methylcyclopentadienyl manganese tricarbonyl) evaporating it is better to leave the pails sealed on the pallet until required. MMT is a cumulative poison that builds up in the body with continued exposure (like Lead and Mercury does). Not surprisingly it is also carcinogenic.

Big Dave
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Paul P
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Joined: 15 Aug 2002
Posts: 2404
Location: Townsend, Mass.
81616.60 points


1971 Chevrolet Chevelle

PostPosted: Mon Aug 18, 2014 1:00 pm    Post subject: Reply with quote

with a 15 gallon cell that does not make much sense to me. 3 tanks and I am done with it more or less.
I did not think that they uses MMT in the C12 only the no lead versions?

_________________
2001 Focus 2.0 Zetec
stock cams, bolt-ons and tune
15.63@87 MPH 1/4mi

1971 - Chevelle 408 SBC N/A
6.86@102.5 MPH 1/8mi
10.78@122 MPH 1/4mi
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af2
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Joined: 01 Sep 2003
Posts: 5558
Location: grassvalley, ca
71227.76 points


1933 Willys Coupe

PostPosted: Mon Aug 18, 2014 9:06 pm    Post subject: Reply with quote

Paul P wrote:
with a 15 gallon cell that does not make much sense to me. 3 tanks and I am done with it more or less.
I did not think that they uses MMT in the C12 only the no lead versions?


You are correct. Same with Sunoco super.

The shelf life is way beyond the 1 month I get with pump fuel.
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Paul P
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Joined: 15 Aug 2002
Posts: 2404
Location: Townsend, Mass.
81616.60 points


1971 Chevrolet Chevelle

PostPosted: Tue Aug 19, 2014 5:30 pm    Post subject: Reply with quote

af2 wrote:
Paul P wrote:
with a 15 gallon cell that does not make much sense to me. 3 tanks and I am done with it more or less.
I did not think that they uses MMT in the C12 only the no lead versions?


You are correct. Same with Sunoco super.

The shelf life is way beyond the 1 month I get with pump fuel.

thumbsup Cheers


Yea it has a better shelf life than pump gas that is for sure. Especially because it is a sealed barrel.

_________________
2001 Focus 2.0 Zetec
stock cams, bolt-ons and tune
15.63@87 MPH 1/4mi

1971 - Chevelle 408 SBC N/A
6.86@102.5 MPH 1/8mi
10.78@122 MPH 1/4mi
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View user's profile Send private message
Paul P
Member


Joined: 15 Aug 2002
Posts: 2404
Location: Townsend, Mass.
81616.60 points


1971 Chevrolet Chevelle

PostPosted: Sun Aug 24, 2014 6:56 pm    Post subject: Reply with quote

Here are the AFRs for the dyno and latest road pull.

Dyno Pull that shows 2 things.
1. Way more there to pull out fuel wise.
2. Not enough cam sort of done at 6200.


Road pull The range is tighter with 11.67 low and 13.45 high. I wish I could get the graph widened so it would not look so short.

_________________
2001 Focus 2.0 Zetec
stock cams, bolt-ons and tune
15.63@87 MPH 1/4mi

1971 - Chevelle 408 SBC N/A
6.86@102.5 MPH 1/8mi
10.78@122 MPH 1/4mi
Back to top
View user's profile Send private message
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