First let me say this would not have been possible without the clear and concise directions provided by Stu Spencer on his page, I have made a few changes which I'll outline but I leave the step by step directions to the master. This is one of the best modifications I've done yet, better throttle response and smoother idle. This manifold came off a '84 B23FT powered 740, at the time I didn't realize what I let slip through my fingers, almost a year later another one came into the yard, this motor is sitting in my garage, by the time I'm done I'll have my K-Jet system with a B23 bottom end. |
First let me say this would not have been possible without the clear and concise directions provided by Stu Spencer on his page, I have made a few changes which I'll outline but I leave the step by step directions to the master. This is one of the best modifications I've done yet, better throttle response and smoother idle. This manifold came off a '84 B23FT powered 740, at the time I didn't realize what I let slip through my fingers, almost a year later another one came into the yard, this motor is sitting in my garage, by the time I'm done I'll have my K-Jet system with a B23 bottom end. |
If you have a 240 turbo you recognize this, the pancake manifold that came with it. The incoming air is restricted by the abissmal layout of the runners. |
Here is the first deviation from Stu's instructions, I had the welder down at work weld up the injector holes then took a die grinder and removed the intrusive mounds that held the old injectors in the intake runners. I honestly don't know if it made a difference but what the heck it looks cleaner, and I figure the mounds would deflect the incoming air away from the injectors causing turbulance. |
Here is the finished instalation, one other alteration to Stu's instructions was drilling out the boss for the cold start injector and putting it up top, (arrow) it is easier to get at and I can use the pre-drilled hole down below for an additional injector when I get the B23 motor done, it will probably need a little more than the K-jet can flow up at the higher boost and rpm. |
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