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FlowKooler has press-on impellers for $80. I think they sent their old pumps to the Flying Dutchman near Medford, OR. I tried both numbers and I think he's closed up shop. I found him on YouTube and he was quite a curmudgeon.
 

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FlowKooler has press-on impellers for $80. I think they sent their old pumps to the Flying Dutchman near Medford, OR. I tried both numbers and I think he's closed up shop. I found him on YouTube and he was quite a curmudgeon.
I spoke to Flying Dutchman before my fiasco started. He said he doesn't build Viper pumps. Flow Kooler may have convinced him though. They took forever to build mine but it's a quality unit. They said they wouldn't build more until they found a reliable builder. Maybe they have now though as that was almost a year ago.
 

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Making solid progress. Hoping to have very good news by end of the week.
 

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If anyone needs a rebuilt one, I will do $450 shipped for the one I am selling
 
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Dumb question on w pumps? Viper only units or SRT10 trucks using the same rig?
 

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Dumb question on w pumps? Viper only units or SRT10 trucks using the same rig?
The Gen 3 cars/trucks use the same pump. This discussion is on the Gen 2 pumps
 

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Wheel Petal Orange Amber Alloy wheel

The easy, fast part is ready! This is a 10 vane impeller vs. the OE 8 vane plastic one.
 

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Where you able to find the seals and bearings needed to do the job? I've got a bad pump sitting in storage waiting to rebuild. I couldn't find those parts though.
 

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Working on that still. Narrowing it down with some great help, but no bearings, or seals yet.
 
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Yes - from FK
 

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So the first thing to confirm on your particular pump is the shaft diameter. The impellers I got were a 5/8" hub bore. The shaft on the pump I have out is 12mm/0.469". They generally keep both in stock, but I'll have to exchange the one I got. I don't know when the larger shaft started being used, but it wasn't on this particular '98 or before. Brad's appears to have the 5/8" shaft, but that might be a later model bearing/shaft replacement.
 

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If they won't exchange it let me know where to measure and I'll check my spare that needs a rebuild and trade you pumps, if mine is the right size. It's a Cardone rebuild that failed almost immediately.
 

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Thanks Brad - they said they would take them back in exchange for the 12mm.
 

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Ball Bearing Supplier - Boca Bearings :: Ceramic Bearing Specialists

I used these guys when I rebuilt my Kenne Bell supercharger. If you know the bearing dimensions, you should be able to match. I'll have to pull my files to see where I matched seals...same sort of thing. Just need the dimensions and you can match easily. When I rebuilt the Kenne Bell blower, I was amazed at the cheap stuff that was originally in there.
 

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I wonder how well the FK impeller works since it is a Vortex (recessed ) type. Not sure on what the stock one is as the pictures I seen are just the back with the pump off. Did FK copy the design and add extra impellers?

I asked over on the voa for a damaged unusable/unrebuildable pump, but no one luck.
 

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It seems that I have got bit by one of those cramp pumps in my 01 this past weekend! I’m debating on trying to rebuild this thing or sourcing a new/rebuilt component to avoid the downtime. I can take my old unit off and report back with what I find as far as bearing dimensions, however not sure how to source the seals that all need.
 

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A bit of good news is that new Gen 1 water pumps can be had for around $100. Even better news is they come with all metal (aluminum) 8-vane impellers. The overall shaft end to drive hub adapter length is identical at 100mm. 12mm impeller boss and 19mm drive diameter. The housing snout diameters are identical within 0.020". I'm still reluctant to pull apart my '98 pump until I have sourced the correct FK impeller to build a higher flow replacement unit for my Blue '96.
Locking hubs Rim Gas Auto part Automotive wheel system
Bicycle part Gas Auto part Wire Electrical wiring
 
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