Jump to content
  • When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

Water Pump Bypass Hose


Recommended Posts

The short hose from the thermostat to the water pump bypass sprung a leak while driving to work this morning. I would like to repair it as soon as possible. It is a simple hose and I was thinking about replacing with generic radiator hose. Does anyone know the diameter of the hose? An alternative would be to wrap it with duct tape and order a replacement. How long do you think this temporary fix would last?



Link to comment
Share on other sites

BP - There are simply too many variables as to how long ducttape might last.  Maybe it would only last as long as a minute, maybe as long as the life of the car.


If you're working on the car I don't see why you couldn't eyeball the diameter?  As for radiator hose, well it's radiator hose so if you had to hack up something to work I don't know why it would be an issue.

Edited by AceAndrew
Link to comment
Share on other sites

An alternative would be to wrap it with duct tape and order a replacement. How long do you think this temporary fix would last?


TIP: In an emergency, a split cooling hose can be strengthened with a plastic bag and cardboard splint and then wrapped with tape. The key is to loosen or remove the radiator cap so there is no pressure on the system. Can't say how many miles you can drive this way, but it might just get you home. Did this with an old truck one time and was surprised at how well it worked. BTW, a 1.25" radiator hose (31.75mm)  will work on the 2002. My Ron Davis radiator has 1.25" outlets. --Fred


'74tii (Colorado) track car

'69ti (Black/Red/Yellow) rolling resto track car

'73tii (Fjord....RIP)

Link to comment
Share on other sites

 If you're using duct tape, it can't be wrong.   But I'm thinking it will never be able to hold the pressure IF you twist-tight the radiator cap.


SO, my experience.  I was in Boyle Heights years ago and the coolant hose from the back of the head up to the heater inlet got about a 1-inch split, fortunately dead center in the middle of the riser portion.  In a parking lot I removed the hose, wiped off all the grease, then wrapped and wrapped with duct tape, then re-installed.


BUT, I only twisted the radiator cap to the first notch, just so it would not come off while driving, which would allow no system pressure to build up.  

Had no problem getting home (a 19 mile drive).  No water lost, engine temp was normal.





Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • BMW Neue Klasse - a birth of a Sports Sedan

    BMW Neue Klasse - a birth of a Sports Sedan

    Unveiling of the Neue Klasse Unveiled in 1961, BMW 1500 sedan was a revolutionary concept at the outset of the '60s. No tail fins or chrome fountains. Instead, what you got was understated and elegant, in a modern sense, exciting to drive as nearly any sports car, and yet still comfortable for four.   The elegant little sedan was an instant sensation. In the 1500, BMW not only found the long-term solution to its dire business straits but, more importantly, created an entirely new
    History of the BMW 2002 and the 02 Series

    History of the BMW 2002 and the 02 Series

    In 1966, BMW was practically unknown in the US unless you were a touring motorcycle enthusiast or had seen an Isetta given away on a quiz show.  BMW’s sales in the US that year were just 1253 cars.  Then BMW 1600-2 came to America’s shores, tripling US sales to 4564 the following year, boosted by favorable articles in the Buff Books. Car and Driver called it “the best $2500 sedan anywhere.”  Road & Track’s road test was equally enthusiastic.  Then, BMW took a cue from American manufacturers,
    The BMW 2002 Production Run

    The BMW 2002 Production Run

    BMW 02 series are like the original Volkswagen Beetles in one way (besides both being German classic cars)—throughout their long production, they all essentially look alike—at least to the uninitiated:  small, boxy, rear-wheel drive, two-door sedan.  Aficionados know better.   Not only were there three other body styles—none, unfortunately, exported to the US—but there were some significant visual and mechanical changes over their eleven-year production run.   I’ve extracted t
  • Upcoming Events

  • Supporting Vendors

  • Create New...