Heater Hose Inside Diameter

[markmac]

Can someone give me the inside diameter of the heater hose?, attaches to fitting on the back of the cylinder head.....looks like this...(do both ends have the same inside diameter?).  Thanks

 

 

[JohnS]

I have one here part #

64-21-1-353-368

small end (input heater valve)   ID = 17mm

large end (connects to block)  ID = 20mm

Edited June 21, 2019 by JohnS

[Conserv]

There’s a smaller-diameter early style and a larger-diameter late style (to the heater and heater valve)....

 

Yours is a 1974, Mark? If so, that’s the late style.

 

John, what year ‘02 is your part number for?

 

Regards,

 

Steve

 

[markmac]

There aren't may parts numbers (or parts) that work on my car, other than the oddball fastener....though I have found a few.  No, I am finishing some simple stuff (or seemingly simple but not necessarily) - cooling system, radiator and hoses.  I was hoping to find a factory hose that would go from my water pipe to the upper radiator (without a connector), no such luck, I am sure there is something from some car that would work.  The hose I was asking about I figured was smaller, but then its been so long since I have seen a standard 2002 really I had forgotten.  A singular hose I think is better than spliced (not uncommon to see in race cars), but this will do for now anyway.

[Simeon]

Ha! I thought that you were going to describe the heater in your race car then. 

[markmac]

No heat required.....I have read before that it was painfully hot inside - I am sure all these cars were the same (hot, hot, hot inside), not surprising given the speed they were driven, and lengths (4, 6 and 12 hour races) and the raised floors and large diameter exhaust pipe in near proximity to the driver.

 

These hoses came from Summit Racing,  Had to buy two to get the ends I needed with the right angle(s) and then cut 'em up.  Went to Pontiac or some other.  30mm ID