 Fuel starvation when maxing out? |
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| David Stowers |
 Feb 10 2014, 07:01 AM
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#1
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Member  Group: Members Posts: 99 Joined: 28-June 12 From: UK Member No.: 14,613 Region Association: None  |
My 914 is running a 1.8 (ish!) 40 Dellortos and recently recorded 111BHP and 121lbft of torque after a carb set up so yesterday I went to have a little thrash about.
A couple of times when the traffic cleared I really kept my foot flat down and pushed to over 100MPH on a slight uphill. It was still pulling strongly for a few seconds then seemed to lose power and splutter slightly. I backed off and it returned to normal. It seemed like the carbs emptied as if the fuel pump couldn't keep up. I had the heater on and the rich oily aroma changed to a hot sharp smell like it suddenly ran lean. It's running the small square facet pump mounted up front near the master cylinder. Any ideas please Thanks David  |
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| brant |
Feb 11 2014, 11:44 PM
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#2
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914 Wizard Group: Members Posts: 12,167 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains 
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What brand of dyno is that? Calibrated?
How is the motor built? I've actually found the facets to be loud but last a long long time. Regulators should help smooth them out. And they don't seem to die. |
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| David Stowers |
Feb 12 2014, 05:58 AM
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#3
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Member Group: Members Posts: 99 Joined: 28-June 12 From: UK Member No.: 14,613 Region Association: None |
QUOTE(brant @ Feb 11 2014, 09:44 PM)  What brand of dyno is that? Calibrated? How is the motor built? I've actually found the facets to be loud but last a long long time. Regulators should help smooth them out. And they don't seem to die. I've no idea what brand of dyno, its the first and only time I've had a car on one and just dropped there in the morning and picked it up at lunchtime! I also have no idea how the motor was built. When I bought the car a year ago I thought I was buying a 2.0 car. When it arrived here in the UK I discovered it was a 1.7 car with a 1.8 motor! The guy I bought it from says he didn't know and sent me a copy of the ad he bought it from a year before and that stated it was a 2.0. I'm guessing its had some work internally as the dyno numbers would suggest increased bore/stroke and some cam changes but I've no idea what. I have tried without success to get hold of the previous previous owner on here but no luck. The car is a Zambezi green '73 MY car with Tan interior from the Boston are if anyone remembers it? Was off the road for a number of years, maybe as many as 10! |
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Posts in this topic
David Stowers Fuel starvation when maxing out? Feb 10 2014, 07:01 AM
r_towle how are the carbs configured?
Is this a new issue?... Feb 10 2014, 07:17 AM David Stowers Hi Rich
What do you mean by configured? Theyre tw... Feb 10 2014, 07:29 AM gunny I sugggest getting a wideband air/fuel gage to mon... Feb 10 2014, 08:03 AM David Stowers Just looked up the wideband gauges, what's inv... Feb 10 2014, 08:27 AM gunny The Wideband O2 sensor needs to be added to your e... Feb 10 2014, 08:35 AM Krieger Does your distributor have the rev limiting rotor? Feb 10 2014, 09:39 AM
David Stowers
Does your distributor have the rev limiting rotor... Feb 10 2014, 11:42 AM David Stowers What model of fuel pump are others running? It see... Feb 10 2014, 12:07 PM ThePaintedMan Facet pumps, while cheap, are typically viewed as ... Feb 10 2014, 12:41 PM David Stowers
Facet pumps, while cheap, are typically viewed as... Feb 10 2014, 12:56 PM Jake Raby Float height is the first thing I'd go to.. If... Feb 11 2014, 01:03 AM David Stowers
Float height is the first thing I'd go to.. I... Feb 11 2014, 03:05 AM Jake Raby
Have any graphs? Were they plotting AFR? Feb 11 2014, 09:33 AM David Stowers
Have any graphs? Were they plotting AFR?
This ... Feb 11 2014, 04:04 PM David Stowers Ok, it's been a couple of weeks and so far I... Mar 17 2014, 05:15 PM McMark If you set float height, or if they do, make sure ... Feb 11 2014, 10:44 AM Jake Raby Compressing the ball changes it all.. I blow on th... Feb 11 2014, 10:59 AM yeahmag I think I set mine to 5-6mm closed per the CB Perf... Feb 11 2014, 03:32 PM David Stowers Wow! I'm trying to keep up but fear I... Feb 11 2014, 03:52 PM Tom Air to Fuel ratio.
Tom Feb 11 2014, 07:09 PM barefoot Got me thinking about my own Dello conversion (don... Feb 12 2014, 07:25 AM ThePaintedMan Some good comments here from folks with far more e... Feb 12 2014, 10:28 AM Intubator If the problem occurs at a consistent RPM regardle... Mar 17 2014, 05:25 PM stugray I read the title of this thread with the sun on my... Mar 17 2014, 06:22 PM Intubator
I read the title of this thread with the sun on m... Mar 17 2014, 06:40 PM David Stowers
I read the title of this thread with the sun on m... Mar 18 2014, 03:18 AM ThePaintedMan Good to hear that you took care of the other unkno... Mar 18 2014, 07:28 AM David Stowers
Good to hear that you took care of the other unkn... Mar 18 2014, 12:45 PM David Stowers Oh and one more thing, when hot and I stop in traf... Mar 19 2014, 04:47 PM David Stowers OK, so just incase anyone remembers or cares I was... Apr 13 2014, 03:08 PM brant wow...
that plug is a keeper
so glad you fixed ... Apr 13 2014, 03:25 PM |
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