Able to use a rubber molded 90?
CK5
Register an account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members.
'89 K5 The Bulldozer
- Thread starter Tnsejed
- Start date
1989 K5, linked, caged, backhalfed, LS3, Hero case, on 42's
Yeah that or maybe tighten the fitting and shim the reservoir up.
Yeah that or maybe tighten the fitting and shim the reservoir up.
The bolt hole in the bracket is just barely in view of the accessory bracket hole. Still needs another 1/4". Good news is I found the pump inlet clocking difference here in my shop, and not in a parking lot changing to my backup pump.
With that said, this is a new can from PSC, and the old one was original to the first build. Started leaking around a pinhole in the weld, which I then JB welded and that only lasted a year.
Instead of machining a bracket I'm going to fab one up that has hole grooves so the bracket can accept changes in position of the pumps inlet boss. Atleast within the window of all the pumps I have here. Checked my backup pump too, and it was worse than this can that's on it. Never even crossed my mind that would be an issue...
Back in business. I've got quite alot of adjustment now on the bracket, so when the pump is replaced all should be ok.
Blazer Bash carnage. Ripped the brushes out of fan 2 and fan 1 brushes are locked in place and chewed at the edge. Complete Spal fan failure.
So are you going to convert them to hydraulic? Maybe that will survive rally mode!
So this happened coming out of rusty nail on gold bar rim. Not sure what caused it. They are 4 or 5 years old. I did have a couple of really hard hits repositioning on waterfalls this season. Rad is mounted on rubber. We rally stage all the time and blast all sorts of stuff.
Spal has said temperature, life cycle, and severe vibration are primary causes of failure. Which is what we all already knew. I don't have much data from any other source or race teams, but these fans are run in all sorts of dezert cars and trucks. My gut tells me this is a combination of service life combined with front end hits bouncing the brushes.
So, what to do. The question is stick with the same fans and run a replacement interval of 3 seasons, or try to the new brushless setup and see how long those last.
Here's the tech: Each fan has its own 50 amp breaker, to a 75 amp relay. Control is done through ecm grounding. I can run either the VA33 fan currently in place or move to a 30107125 brushless spal fan. The both move really close to 2000cfm each at full pull.
Current brushed fans are rated to run at 80 degrees C, and will run till they melt down.
Brushless setup is rated at 100 degrees C with a thermal shutoff at 105 degrees C. Brushless provides soft start and PWM control. Which I will not be using. Per SPAL I can run the yellow control to ignition voltage, and use the white to ecm fan control ground. This will control the fans without a PWM controller.
I will be able to eliminate the relays from the system as that is all inside the fan already.
Price increase on brushless is double. I'm not sure yet what the answer is.
Spal has said temperature, life cycle, and severe vibration are primary causes of failure. Which is what we all already knew. I don't have much data from any other source or race teams, but these fans are run in all sorts of dezert cars and trucks. My gut tells me this is a combination of service life combined with front end hits bouncing the brushes.
So, what to do. The question is stick with the same fans and run a replacement interval of 3 seasons, or try to the new brushless setup and see how long those last.
Here's the tech: Each fan has its own 50 amp breaker, to a 75 amp relay. Control is done through ecm grounding. I can run either the VA33 fan currently in place or move to a 30107125 brushless spal fan. The both move really close to 2000cfm each at full pull.
Current brushed fans are rated to run at 80 degrees C, and will run till they melt down.
Brushless setup is rated at 100 degrees C with a thermal shutoff at 105 degrees C. Brushless provides soft start and PWM control. Which I will not be using. Per SPAL I can run the yellow control to ignition voltage, and use the white to ecm fan control ground. This will control the fans without a PWM controller.
I will be able to eliminate the relays from the system as that is all inside the fan already.
Price increase on brushless is double. I'm not sure yet what the answer is.
We’ve been running the pwm brushless spal on @Desert K5 gen v swap and it’s sweet
You had a "couple" (like 6) hard hits on that rock on Holy Cross this year that bent your slider.
Going with the brushless and will give them a go. Its funny because I had race car parts doing race car shit, and now I've doubled down. Lol
Lol
Are you ordering them direct from Spal?
I did not, I just called and asked them questions. Kartek, Ron Davis, and CBR are all spal dealers. I ordered through kartek as it was listed as in-stock.
Was just debating about replacing my dead fan with one if those.
My final thought was if there is any reality in brushes bouncing from slamming the truck on sliders and whatnot the brushless should eliminate that. Hard to fathom that there isn't brush bounce when I hit the sliders or front really hard. But who knows.
I know coming off the ledge that bent my driveshaft hurt my head too, TWICE first the front then the rear. Maybe that finished off my fan too.
New rubber time 
Any life left in your old ones?
17"s?
Yup there is some life left in them. They do feel a bit harder than the new ones which I think is from age, plus the height of the tread. They are 4 seasons or maybe 5 season old. I think this is where I was feeling a difference in the truck on certain lines.
42x14.5 -17
Shoot me a text.
Over the winter I replaced all the front heims and currie joints on the front of the truck. I lose tie rod joints first, then curries, then the panhard. That seems to be my normal routine over the years. Got that done which is pretty normal, did some other maintenance and tear down/greasing/ etc....
One other thing I did though was replace all my spare parts, straps, and tool bags with milwaukee packouts. My bags were trashed and ripped. So it was time to get that done.
In doing so I realized how much crap I've accumulated over all the years that was just riding around with me in those bags. I never went through it, it just sat there in the back of my rig. So I knew I had to go through it all at some point in time.
I just got shutdown last weekend on an obstacle that I've never been shut down on before. Granted it was much wetter than usual and the tires have not rounded over much yet, but I should've made it. Instead I had to take the winch line of shame.
So its time to go through this crap and go minimalist. Shedding pounds without stopping the cupcakes. Why the hell is there a spare IAC valve from some yota in here? I haven't broken one of these yukon lockouts in 10 years, so why carry my slugs? I'll winch before swapping slugs on the trail. I've got relays from multiple different vehicles chilling in this pile of shit. Somebodies old drive belt tensioner and a new idler pulley from something.....
I think part of the problem is I grab this stuff and throw it in my pickup when going out to work on stuff as well. So it just keeps accumulating.
Interestingly enough, my most used tool in here is the multimeter.
One other thing I did though was replace all my spare parts, straps, and tool bags with milwaukee packouts. My bags were trashed and ripped. So it was time to get that done.
In doing so I realized how much crap I've accumulated over all the years that was just riding around with me in those bags. I never went through it, it just sat there in the back of my rig. So I knew I had to go through it all at some point in time.
I just got shutdown last weekend on an obstacle that I've never been shut down on before. Granted it was much wetter than usual and the tires have not rounded over much yet, but I should've made it. Instead I had to take the winch line of shame.
So its time to go through this crap and go minimalist. Shedding pounds without stopping the cupcakes. Why the hell is there a spare IAC valve from some yota in here? I haven't broken one of these yukon lockouts in 10 years, so why carry my slugs? I'll winch before swapping slugs on the trail. I've got relays from multiple different vehicles chilling in this pile of shit. Somebodies old drive belt tensioner and a new idler pulley from something.....
I think part of the problem is I grab this stuff and throw it in my pickup when going out to work on stuff as well. So it just keeps accumulating.
Interestingly enough, my most used tool in here is the multimeter.
You oughta weigh the stuff you take out.
