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Search: Posts Made By: 47 dodge
Forum: Fuel Injection 08-30-2019, 02:42 PM
Replies: 10
Views: 1,950
Posted By 47 dodge
Re: Holley pro jection 2d off idle stumble, poor gas mileage

One more note I am now getting just over 6mpg consistently, and that is about what I would expect from a bus of this size.
Forum: Fuel Injection 08-30-2019, 02:40 PM
Replies: 10
Views: 1,950
Posted By 47 dodge
Re: Holley pro jection 2d off idle stumble, poor gas mileage

Yes figured out. I did change the ecu, and was able to tune it for good drivability, and a little better fuel mileage. Light throttle is now close to 14:1. I have checked the throttle position...
Forum: Fuel Injection 05-31-2019, 02:47 AM
Replies: 10
Views: 1,950
Posted By 47 dodge
Re: Holley pro jection 2d off idle stumble, poor gas mileage

Put the air fuel meter on with it own O2 sensor. It shows,
First 1/3 throttle movement very rich about 11:1
Mid range throttle 13:1
Last third 12:1

So rich across all. I disconnect the O2...
Forum: Fuel Injection 05-23-2019, 03:59 PM
Replies: 10
Views: 1,950
Posted By 47 dodge
Re: Holley pro jection 2d off idle stumble, poor gas mileage

Had not thought of pulling some plugs, but good idea. Can do that tomorrow.

I have ordered an air/fuel meter with it's own o2 sensor, so I can better monitor what it happening.

The O2 sensor...
Forum: Fuel Injection 05-22-2019, 05:38 PM
Replies: 10
Views: 1,950
Posted By 47 dodge
Re: Holley pro jection 2d off idle stumble, poor gas mileage

The stumble is at light throttle while going steady speed.
Forum: Fuel Injection 05-22-2019, 03:01 AM
Replies: 10
Views: 1,950
Posted By 47 dodge
Holley pro jection 2d off idle stumble, poor gas mileage

I have a NOS Holley pro jection system which I have put on a 71 International school bus. 345 engine, 5 speed manual trans. DUI distributor, Intake manifold machined to match TBI. Dual exhaust.

I...
Forum: Gas Engine Tech 03-23-2019, 03:09 PM
Replies: 6
Views: 491
Posted By 47 dodge
Re: 392 non ic

Thank you. This sounds reasonable. I did replace the radiator with a new one from Griffen, and added an aux oil cooler for the trans.

So for now will just stick with the 345 I replaced the 392...
Forum: Gas Engine Tech 03-23-2019, 02:21 AM
Replies: 6
Views: 491
Posted By 47 dodge
Re: 392 non ic

I did suspect a head gasket, as you are correct it normally would be, however there was no leakage into the cylinders after sitting with pressure in the radiator overnight. Of course this is not...
Forum: Basic Tech Questions 03-22-2019, 05:46 PM
Replies: 2
Views: 645
Posted By 47 dodge
Re: 10.00x20

They do make a 7.5 x 22.5 as well. I have not had any problem though with the 8.25 width on my 68 loadstar 1600, or my 71 1700 loadstar
Forum: Gas Engine Tech 03-22-2019, 02:50 PM
Replies: 6
Views: 491
Posted By 47 dodge
392 non ic

I have a 392 non ic. It was in my school bus/rv conversion with a MT-40 allison automatic. Problem was it kept blowing out the coolant on long grades even though the engine temp did not rise. Two...
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