TBI questions

Fran and Bud quest100 at gte.net
Tue Feb 16 05:30:57 GMT 1999


Engraved number is GM 5235231*RPD and on opposite side is 2038 GM. 
Identical markings on both injectors. 
----------
>From: "Walter Sherwin" <wsherwin at idirect.com>
>To: <diy_efi at efi332.eng.ohio-state.edu>
>Subject: Re: TBI questions
>Date: Tue, Feb 16, 1999, 5:33 AM
>

>Thanks!  I checked with my parts guy, and 17087021 was used on an 87-89
>7.4litre (454) code N engine.  If you wouldn't mind, what are are the GM
>numbers engraved on the top flats of the injectors?  They should be visible
>without having to remove the injectors from the body.
>
>Walt.
>
>
>-----Original Message-----
>From: Fran and Bud <quest100 at gte.net>
>To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
>Date: Friday, February 12, 1999 5:42 PM
>Subject: Re: TBI questions
>
>
>>I have one BBC TBI (2") that I believe is pretty early - had the hot water
>>heated adapter that opened out to match Q-jet manifold.  The injectors in
>it
>>are Maroon (Dark Red?) - Lt.(Baby) Blue.
>>
>>Your parts guy may be able to tell what its original application was from
>>the Production Number on the throttle body casting - PN17087021.  I have
>>never attempted to find out what it was from.
>>
>>
>>----------
>>>From: "Walter Sherwin" <wsherwin at idirect.com>
>>>To: <diy_efi at efi332.eng.ohio-state.edu>
>>>Subject: Re: TBI questions
>>>Date: Sat, Feb 13, 1999, 2:47 AM
>>>
>>
>>>>>From the archives...
>>>> GM TBI
>>>>There is a color coding on the top of the injector, in the
>>>>center of where the electrical connector goes, that does
>>>>wear off, but is  the flow rate code?
>>>>  Grn/Wht   305 CID eng  about 40 #/hr
>>>>  Org/Blk   350 PU       about 55 #/hr
>>>>  Yel/Brn   350 Cop Car  about 65 #/hr
>>>>  Blu/Blk   Late BBC PU  about 80 #/hr
>>>>  EarlyBBC PU  about 90 #/hr
>>>>  Purple??
>>>
>>>
>>>
>>>
>>>Now I am confused.  I have two sets of what are supposed (??) to be 80
>#/Hr
>>>BBC TBI injectors, in my hand.   One set has blue/black markings, and this
>>>number etched into it,   GM17084304RPD.  The other set has orange/black
>>>markings, and has this number etched into it,  GM5235206*RPD.
>>>
>>>Are these the same?  Which one is the 80 BBC injector?  Has my parts guy
>>>goofed up?  Anyone got some advice?
>>>
>>>
>>>Thanks;
>>>Walt.
>>>
>



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