the j tube and the hole in my block.

[bioskyline]

this is one thing that fasanates me is why do we have the hole in block where the j tube goes? its been bugging me since my 5m had the same setup. after a few beers on my old blown block we got looking at it, and it almost looks like a spot for a mechanical fuel pump, much like one a carb'd 22r (in shape, i know the 22r pump is on the head)

does anyone know why its there??

 

[Poodles]

Yep, you're right

It's part of the M engine design that was kept. Oil pump drive shaft would have a cam on it to drive the pump, IIRC some of the shafts have the cam, dunno if it was on the 7M though.

 

[supradjza80]

Yep, you can buy a Chevy mechanical fuel pump cover from Summit etc. if you choose to get rid of the j tube too as it is the same exact size. I did this on my car.

 

[92nsx]

^^^ BBC ( Big Block Chevy ) pump cover that is

 

[bioskyline]

ok good to know. didnt know chevy covers fit.

 

[AJ'S 88NA]

JDM Cressida motors have a block off plate, I believe that's were mine came from.

 

[mkIIIman089]

Never could understand spending money on a block off plate when you can easily drill the spot welds and pop the tube off the plate for free.

 

[IJ.]

Yep, you're right

It's part of the M engine design that was kept. Oil pump drive shaft would have a cam on it to drive the pump, IIRC some of the shafts have the cam, dunno if it was on the 7M though.

7M's still have the cam on the aux shaft, I machined mine off.

Also got bored and CNC'd my own blockoff plates

 

[Devin LeBlanc]

Were not as baller as you IJ

 

[jessemkiiis]

Never could understand spending money on a block off plate when you can easily drill the spot welds and pop the tube off the plate for free.

because there cheap and come in all diffrent colors ect.
cosmetics plus saves time if you dont have much.
I bought a chrome one for around 10 dollars