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MTT3107
Samba Member
Joined: September 20, 2021
Posts: 265
Location: KY
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 Posted: Thu Jun 01, 2023 1:39 pm Post subject: Question about running engine on stand. |
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I plan to later this year pull the engine from my bug and switch out the camshaft, and maybe even go to 1776 or 1835 cc.
A have the adapter for the starter, so I can run the engine before reinstalling.
But my engine case came from a fuel injected engine, so there is no mechanical fuel pump, I have an electric pump in the car.
When I run the engine outside of the car, can I just gravity feed the gas ?
Carburators are dual 34 EPC's. |
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Don Jones
Samba Member
Joined: April 09, 2020
Posts: 199
Location: Makaha, Hawaii
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| Posted: Thu Jun 01, 2023 2:34 pm Post subject: Re: Question about running engine on stand. |
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| MTT3107 wrote: |
I plan to later this year pull the engine from my bug and switch out the camshaft, and maybe even go to 1776 or 1835 cc.
A have the adapter for the starter, so I can run the engine before reinstalling.
But my engine case came from a fuel injected engine, so there is no mechanical fuel pump, I have an electric pump in the car.
When I run the engine outside of the car, can I just gravity feed the gas ?
Carburators are dual 34 EPC's. |
Just buy a cheap electric fuel pump, when done with it, carry as a spare for your car. Heres one for $10 on Amazon.
https://www.amazon.com/Electric-Universal-Pressure...mp;sr=8-21 |
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oprn
Samba Member
Joined: November 13, 2016
Posts: 12743
Location: Western Canada
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| Posted: Thu Jun 01, 2023 3:55 pm Post subject: Re: Question about running engine on stand. |
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I see no reason that gravity feed won't work for a beak-in run. There is no load on the engine and no high rpm so gravity feed should keep up just fine.
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Glenn 
Mr. 010
Joined: December 25, 2001
Posts: 76941
Location: Sneaking up behind you
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| Posted: Thu Jun 01, 2023 4:07 pm Post subject: Re: Question about running engine on stand. |
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| oprn wrote: |
| I see no reason that gravity feed won't work for a beak-in run. There is no load on the engine and no high rpm so gravity feed should keep up just fine. |
You do want 3000rpm for cam breakin.
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Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
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Member #1009
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rayjay
Samba Member
Joined: March 26, 2008
Posts: 1506
Location: Buford GA
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| Posted: Sun Jun 04, 2023 8:21 am Post subject: Re: Question about running engine on stand. |
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| It will run just fine with gravity feed. I use a riding mower fuel tank on my test stand. You DO want to use an inline fuel shutoff valve which are also used on mowers and a fuel filter would also be smart. |
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oprn
Samba Member
Joined: November 13, 2016
Posts: 12743
Location: Western Canada
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| Posted: Sun Jun 04, 2023 2:30 pm Post subject: Re: Question about running engine on stand. |
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| Glenn wrote: |
| oprn wrote: |
| I see no reason that gravity feed won't work for a beak-in run. There is no load on the engine and no high rpm so gravity feed should keep up just fine. |
You do want 3000rpm for cam breakin. |
In this case RPM is nearly irrelevant. Engine load determines fuel volume requirements and there is virtually no load on the engine at break in on an engine stand.
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We had the stone age, the bronze age, the industrial age and now we are in the age of mass deception and mind control for corporate profit. (The mass media age) |
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jpaull
Samba Member
Joined: February 22, 2005
Posts: 3466
Location: Paradise, Ca
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| Posted: Sun Jun 04, 2023 3:15 pm Post subject: Re: Question about running engine on stand. |
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| Don Jones wrote: |
| MTT3107 wrote: |
I plan to later this year pull the engine from my bug and switch out the camshaft, and maybe even go to 1776 or 1835 cc.
A have the adapter for the starter, so I can run the engine before reinstalling.
But my engine case came from a fuel injected engine, so there is no mechanical fuel pump, I have an electric pump in the car.
When I run the engine outside of the car, can I just gravity feed the gas ?
Carburators are dual 34 EPC's. |
Just buy a cheap electric fuel pump, when done with it, carry as a spare for your car. Heres one for $10 on Amazon.
https://www.amazon.com/Electric-Universal-Pressure...mp;sr=8-21 |
Great point! 12v should be there for any run stand for gauges and starter anyhow. I would not mess with gravity feed on break in.
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[email protected] MPH 1/4 Mile & 8.1 @ 83.7MPH in 1/8 Mile with Mild Type 1 VW Mag Case 2234cc commuter engine in stock weight bug w/only .491 total lift(CB2292 Cam), 42x37 heads, 48idf's, Street tires, Belt on, Mufflers, Pump gas, video of the run here: https://youtu.be/M3SPqMOKAOg
Transmission by MCMScott:
Rhino case, Klinkenberg 4.12, Superdiff, 002 mainshaft with 091 first idler. Weddle 1.48 Third & 1.14 Fourth. |
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nextgen
Samba Member
Joined: August 19, 2004
Posts: 6032
Location: CONGERS, N.Y.
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| Posted: Sun Jun 04, 2023 3:26 pm Post subject: Re: Question about running engine on stand. |
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Here is mine back in 1992 on a milk box and used gravity feed. Modok saw I changed my crank pulley from one I made from a T-1 pulley to one I got from Mike Sharp from Sharpbuilt in Australia on a trade. Same engine in my car today. Never removed. Ok I also painted my fan housing never buy a Chrome fan housing, they rust in days. It a 32 hp fanhousing with Doghouse.
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