rficalora Rob Ficalora Willis, TX (2764 posts) Registered: 10/24/2007 02:46PM Main British Car: '76 MGB w/CB front, Sebring rear, early metal dash Ford 302 |
Fuel injectors
As I'm getting ready to install the ProFlo system I picked up, I'm wondering if I should have the injectors cleaned 1st. Given it was installed & possibly run on the PO's engine and then removed & sat for several years, I'm thinking there may be varnish built up. Thoughts - good plan or waste of money?
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DiDueColpi Fred Key West coast - Canada (1365 posts) Registered: 05/14/2010 03:06AM Main British Car: I really thought that I'd be an action figure by now! |
Re: Fuel injectors
Get them cleaned and tested for sure Rob.
Nothing worse than spending hours on a tune only to find out that you're setting up on bad injectors. Live like you mean it. Fred. |
BlownMGB-V8 Jim Blackwood 9406 Gunpowder Rd., Florence, KY 41042 (6470 posts) Registered: 10/23/2007 12:59PM Main British Car: 1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS |
Re: Fuel injectors
Definitely cleaned and tested by a competent shop. Have them give you a flow graph based on injector on-time with a minimum of four-five data points and an extension to give the injector dead-time, and full saturation flow rate. These are the absolute minimums you should have but you should also get flow spread at each data point so you know for instance, what the % variance among the full set is at your idle flow rate.
Ideally you would have no variance. But this is the real world and it often doesn't work out that way. Jim |
rficalora Rob Ficalora Willis, TX (2764 posts) Registered: 10/24/2007 02:46PM Main British Car: '76 MGB w/CB front, Sebring rear, early metal dash Ford 302 |
Re: Fuel injectors
Any particular company to use... or avoid?
Edited 1 time(s). Last edit at 10/17/2017 10:51PM by rficalora. |
MG four six eight Bill Jacobson Wa state (324 posts) Registered: 10/23/2007 02:15AM Main British Car: 73 MGB Buick 215, Eaton/GM supercharger |
Re: Fuel injectors
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rficalora Rob Ficalora Willis, TX (2764 posts) Registered: 10/24/2007 02:46PM Main British Car: '76 MGB w/CB front, Sebring rear, early metal dash Ford 302 |
Re: Fuel injectors
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BlownMGB-V8 Jim Blackwood 9406 Gunpowder Rd., Florence, KY 41042 (6470 posts) Registered: 10/23/2007 12:59PM Main British Car: 1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS |
Re: Fuel injectors
I only see full flow test results. You really do need the injector dead time to be able to enter that in the controller settings, and the only way I know to get that is to do chart a series of 4 or 5 flow tests at different pulse rates. Just because they flow the same fully saturated does not mean they flow the same at 4 ms. (idle)
Jim |
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