@@pressurewashnerds having the hardest time with the gearbox. I got the PA gear box from envirospec and have had leaks between the gear box and the pump where they attach. Took it apart, checked the O rings and they are all in tact but still getting leaks. would like to figure it out but want to switch to belt drive if this keeps coming up
Ive been running this engine/pump setup for about year and a half now. Has held up great. The jets on the engine got clogged once and was annoying to fix but other than that it has run perfect. Def a great budget build over honda and crx machines
I have had nothing but issues with my gearbox. I got the PA gearbox from envirospec and have reassembled it twice, making sure all bolts are tight, O rings are lubricated and siliconed, but still continue to get a slow oil leak between the gearbox and the pump. tempted to switch to this gearbox that you have.
Nice job! I did the same build several years ago with the Predator 22hp. I'm not too fond of belt drives, either. I did add my gearbox to the pump before attaching it to the engine, and it was fairly easy. Except the GP pump I have is a beast and cranks out in excess of 10 GPM. I have also dual-fed the water into the pump on both ends, but I have had problems downstreaming with it because so much water is coming through it. I am open to suggestions there as I would love to apply detergent with it. The only mods I did on the engine were to replace the spark plugs to a higher quality, replace the fuel pump for the same reason, and got rid of the fuel shut-off valve which became faulty and added a manual shut-off for the fuel line. Other than that my Predator engines are outperforming my Hondas.
Love to hear that it’s working out well for you! Yeah I did a bucket test and assumed I mis-timed it because I was getting around 9.5-10GPM. The excess flow is awesome for rinsing houses but yeah pulling more chemical while downstreaming can be a bit of a waste.
Thank you! Personally I’d never run anything less than 250 gallons but if you’ll always be hooked to a strong supply, you could probably get away with a 150.
With the gear drive, we would need a pump from the buffer tank? That was the reason why I currently have a 5 GPM belt drive because it suck water from the tank. Has these info changed because I purchased it 5 years ago.
Gear drive and belt drive will both pull from a buffer tank as long as the pump isn’t super elevated from the water source. One thing I forgot to mention is you’ll want to prime the pump with positive pressure. I ran a garden hose to mine with 3/4 GHT to 3/4 NPT fitting and ran the machine for like 5 seconds. Then it pulled perfectly fine from the tank.
I got this engine in a golf cart I keep having to take the carburetor apart because he floated is always sticking I've seen where others are having the same problem
How much saving comparing to purchasing? Not sure I have the skill but it seems like you have all the part in your list that might give it a shot. Thanks.
This will save you at least $1000 compared to the cheapest 8GPM prebuilts that I’ve seen. Plus the added benefit of knowing your equipment in and out. I’d be happy to help you over the phone if you run into any issues.
@@pressurewashnerds Wow, thanks. That is what I was just talking about. Building, safe money and I will know what break and where to get the parts. I appreciate you sharing.
I just overhauled one this spring in a small roller, love the rod inserts 😊😊❤
How many hours do you have?
Currently building mine as I looked for some assistance and found this. Perfect timing. Just trying to figure out the electrical.
Glad the video could help!
If you need any extra help on the electrical just drop your email in the comments and I can walk you through it.
@@pressurewashnerds having the hardest time with the gearbox. I got the PA gear box from envirospec and have had leaks between the gear box and the pump where they attach. Took it apart, checked the O rings and they are all in tact but still getting leaks. would like to figure it out but want to switch to belt drive if this keeps coming up
Great video, thank you!!!
Thanks, I appreciate it!
Solid build!
Thank you!! But actually thank you for the fuel pump video showing where to tie in the switch at. Saved me some time haha
@ you’re welcome and I’m glad it was useful.
Ive been running this engine/pump setup for about year and a half now. Has held up great. The jets on the engine got clogged once and was annoying to fix but other than that it has run perfect. Def a great budget build over honda and crx machines
That’s great to hear! Hopefully we both get a good few thousand hours out of them 🤞
Add a fuel shut valve on the fuel line and run the carb dry. Ethanol is the worst when it just stays in carbs.
I have had nothing but issues with my gearbox. I got the PA gearbox from envirospec and have reassembled it twice, making sure all bolts are tight, O rings are lubricated and siliconed, but still continue to get a slow oil leak between the gearbox and the pump. tempted to switch to this gearbox that you have.
Interesting! Did you check for burrs on the pump and gearbox casting?
I’m at around 100 hours and this whole setup is running great.
@@pressurewashnerds that is what i was checking for when i took it apart this last time and couldnt find any of it. Going to check one last time
Let me know if you find anything. Inspect that o-ring too, or replace if you can.
Nice job! I did the same build several years ago with the Predator 22hp. I'm not too fond of belt drives, either. I did add my gearbox to the pump before attaching it to the engine, and it was fairly easy. Except the GP pump I have is a beast and cranks out in excess of 10 GPM. I have also dual-fed the water into the pump on both ends, but I have had problems downstreaming with it because so much water is coming through it. I am open to suggestions there as I would love to apply detergent with it. The only mods I did on the engine were to replace the spark plugs to a higher quality, replace the fuel pump for the same reason, and got rid of the fuel shut-off valve which became faulty and added a manual shut-off for the fuel line. Other than that my Predator engines are outperforming my Hondas.
Love to hear that it’s working out well for you! Yeah I did a bucket test and assumed I mis-timed it because I was getting around 9.5-10GPM.
The excess flow is awesome for rinsing houses but yeah pulling more chemical while downstreaming can be a bit of a waste.
Great video and build. Been thinking about one of these myself. What would you recommend as the smallest water tank?
Thank you! Personally I’d never run anything less than 250 gallons but if you’ll always be hooked to a strong supply, you could probably get away with a 150.
With the gear drive, we would need a pump from the buffer tank? That was the reason why I currently have a 5 GPM belt drive because it suck water from the tank. Has these info changed because I purchased it 5 years ago.
Gear drive and belt drive will both pull from a buffer tank as long as the pump isn’t super elevated from the water source. One thing I forgot to mention is you’ll want to prime the pump with positive pressure. I ran a garden hose to mine with 3/4 GHT to 3/4 NPT fitting and ran the machine for like 5 seconds. Then it pulled perfectly fine from the tank.
I got this engine in a golf cart I keep having to take the carburetor apart because he floated is always sticking I've seen where others are having the same problem
I would switch over to EFI. That's what I do for all my small engines.
Interesting. Will definitely make an update video if I run into that same issue
@@WilliamEllison is there a kit that I can purchase for that
do you have the part number
Don’t use the corn gas folks 😢
@@philliphall5198 I only use E free
In all my small engines
Have you had any problems with original fuel pump or with overflowing issues?
Nope! Just about to winterize now but it’s ran great this fall.
How much saving comparing to purchasing? Not sure I have the skill but it seems like you have all the part in your list that might give it a shot. Thanks.
This will save you at least $1000 compared to the cheapest 8GPM prebuilts that I’ve seen. Plus the added benefit of knowing your equipment in and out.
I’d be happy to help you over the phone if you run into any issues.
@@pressurewashnerds Wow, thanks. That is what I was just talking about. Building, safe money and I will know what break and where to get the parts. I appreciate you sharing.
No torque spec for bolts?
Negative. All bolts are thread locked and external so I wasn’t too concerned about chasing down torque specs
how much did you spent over all?
I’d have to add it all up again but I believe around $2600 with fuel tank, fuel pump and all the bells and whistles.
@@pressurewashnerds Dang! That's impressive! Great job man!
I'm starting with the 4400 4.2 gallons per minute model.
That’s what we started with as well. Great machine for us and I never plan on selling it.
Wow, would you look at that..
👀
Good luck getting the coupon 😠
They run sales pretty frequent. Even at $950 right now, it’s much cheaper than the alternatives.