Injector Question

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Apr 28, 2022 | 10:28 PM

85corvettejeff

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Intermediate

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From: Lake Grove NY , Long Island

Injector Question

I have a stock 85 with an automatic , i have these injectors installed ,are these too big for a stock motor? no drive ability issues just wondering ?

26LB Bosch Upgrade Set Of 8 Fuel Injectors

Apr 28, 2022 | 11:17 PM

W2vette

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From: Sparta, Wisconsin

I think stock injectors for an 85 are 24lbs

Apr 29, 2022 | 08:48 AM

Incorvettei

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From: Marlton NJ

I believe the factory injectors were 22’s. I don’t see an issue using 26’s

Apr 29, 2022 | 09:14 AM

VikingTrad3r

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Quote:

Originally Posted by Incorvettei

I believe the factory injectors were 22’s. I don’t see an issue using 26’s

incorrect. stock on 85 were 24lbs bosch. all black in colour. 1 year only for 24lbs.

Apr 29, 2022 | 10:49 AM

bjankuski

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From: Glenbeulah Wi

Quote:

Originally Posted by 85corvettejeff

I have a stock 85 with an automatic , i have these injectors installed ,are these too big for a stock motor? no drive ability issues just wondering ?

26LB Bosch Upgrade Set Of 8 Fuel Injectors

They are a little big but will work fine for the most part. You could be giving up some power at WOT if the car is running rich since those injectors are 8% larger then stock but that needs to be determined by checking AFR and what the engine actually wants.

Your fuel trims could be checked to see how much the computer was correcting and that would give you a idea on where you stood.

in general it will probably be fine.

Apr 29, 2022 | 10:56 AM

vader86

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From: Athens AL

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Stock 85 is 24lb/hr but rated at a lower pressure, so they're similar to the 22s in later years.

26lb would be a bit too much for the ECM to compensate for I'd think.

Apr 30, 2022 | 11:45 AM

Phobos84

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From: Sligo PA

Think about a flex fuel car. Most run at least a 36 pound injector on a stock engine because of the extra flow needed. When you fill the tank with regular pump gas it runs just fine. So you can run almost any injector you want. As long as the tune is done for those injectors it will run fine.

Apr 30, 2022 | 12:48 PM

VikingTrad3r

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Quote:

Originally Posted by vader86

Stock 85 is 24lb/hr but rated at a lower pressure, so they're similar to the 22s in later years.

26lb would be a bit too much for the ECM to compensate for I'd think.

Quote:

Originally Posted by Phobos84

fuel trims (int/blm) will tell the full story. or just get 24’s