Author Topic: Beginner, novice trying to run a BBC with Hilborn injection  (Read 7206 times)

Offline tcoupekyle

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I got the car to start but idle and Rev it will not do very well. Barrel valve adjustment seems like it does nothing. Then if you try to throw a Rev it slowly climbs the rpms.

I don't have a clue what to do. Any ideas?

Offline Paul New

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Re: Beginner, novice trying to run a BBC with Hilborn injection
« Reply #1 on: July 16, 2018, 07:52:36 PM »
Is the system flowed? Is it plumbed correctly? What spring pressure is your idle bypass set at?

Offline tcoupekyle

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Offline tcoupekyle

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Re: Beginner, novice trying to run a BBC with Hilborn injection
« Reply #3 on: July 16, 2018, 08:15:13 PM »
IDK if it had been flowed IDK if it's plumbed right...

Offline tcoupekyle

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Re: Beginner, novice trying to run a BBC with Hilborn injection
« Reply #4 on: July 16, 2018, 08:16:59 PM »
How can I tell the pressure?

Offline msundstrom

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Re: Beginner, novice trying to run a BBC with Hilborn injection
« Reply #5 on: July 16, 2018, 08:19:26 PM »
Is distributor timing on, lots of fire out the zoomies is a tooth retarded timing? BV leakage%?

Offline tcoupekyle

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Re: Beginner, novice trying to run a BBC with Hilborn injection
« Reply #6 on: July 16, 2018, 08:28:32 PM »
I have timing set at 36 degrees. IDK about barrel valve leakdown.

Offline msundstrom

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Re: Beginner, novice trying to run a BBC with Hilborn injection
« Reply #7 on: July 16, 2018, 08:41:30 PM »
Don't know your details that Paul brought up but mine for straight methanol was 28% +\-BV leak, 130+\- main jet with 2 psi idle bypass on a 6.08 gpm pump at 4000 rpm, throttle plates at .003 Hilborn 2 7/16" on a 467 inch BBC.

Offline tcoupekyle

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Re: Beginner, novice trying to run a BBC with Hilborn injection
« Reply #8 on: July 17, 2018, 04:10:38 PM »
Mines a 468 .090 pill aside from that I don't know if seems like it's giving it way too much fuel.

Offline msundstrom

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Re: Beginner, novice trying to run a BBC with Hilborn injection
« Reply #9 on: July 17, 2018, 07:04:20 PM »
Best advice I can give is send your pump, injectors and bypasses to Spud at Fuel Injection Enterprises and have it flowed and the tuneup will be very accurate, no guessing and no broken parts and it's very inexpensive.
Mark S

Offline Paul New

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Re: Beginner, novice trying to run a BBC with Hilborn injection
« Reply #10 on: July 17, 2018, 08:24:56 PM »
Look at this page it shows the plumbing, is this how you have yours?
http://hilborninjection.com/wp-content/uploads/2016/02/installation.pdf

Offline tcoupekyle

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Re: Beginner, novice trying to run a BBC with Hilborn injection
« Reply #11 on: July 19, 2018, 07:02:08 AM »
I was looking at that schematic but mines done differently
 .

Offline hotrod316

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Re: Beginner, novice trying to run a BBC with Hilborn injection
« Reply #12 on: July 19, 2018, 07:31:37 AM »
sorry if I was closer would drive over and help you  steve m

Offline wideopen231

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Re: Beginner, novice trying to run a BBC with Hilborn injection
« Reply #13 on: July 19, 2018, 10:00:02 AM »
Best advice you have gotten or will get.Same as above get it flowed regardless who.They will get you about dead on and can advise you after the sell.  Compare cost of flowed system to cost of wasted fuel,wasted oil if milking it and any parts you could break along the way like flexplate from hard kick back. You will see where flow job is money ahead.
Relecting obama is like shooting right foot because it did not hurt enough when you shot left foot

Offline tcoupekyle

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Re: Beginner, novice trying to run a BBC with Hilborn injection
« Reply #14 on: July 20, 2018, 08:30:45 AM »
Thanks guys I think I'll be getting it flowed