Just Joel Posted September 15, 2011 Report Share Posted September 15, 2011 The time has come for me to decide what water pump to run on my freshly rebuilt l20b in my 71 510 wagon. So is there any advantages or disadvantages to running a fan clutch type pump or should I stick with a standard fixed fan pump? Thanks Joel Quote Link to comment
NOTES... Posted September 15, 2011 Report Share Posted September 15, 2011 No fan clutch = less stress on motor and such so more hp.. and itsa much cleaner look... slim fan it.. my .02 Quote Link to comment
datzenmike Posted September 15, 2011 Report Share Posted September 15, 2011 The clutch fan limits the RPMs to 1,600 when cold and 2,300 when overheated. Save a bit of gas cuts the noise. Less to go wrong with the fixed fan. Quote Link to comment
Wide14u Posted September 15, 2011 Report Share Posted September 15, 2011 cut the noise no clutch Quote Link to comment
Jayden71 Posted September 15, 2011 Report Share Posted September 15, 2011 cut the noise no clutch ummm...thats backwards aint it. no clutch fixed fan = more noise :blink: Quote Link to comment
DAT510 Posted September 15, 2011 Report Share Posted September 15, 2011 lol that reminds me of my friend that put his fan on backwards in his chevelle. it sounded like a jet at 50mph Quote Link to comment
Burabuda Posted September 15, 2011 Report Share Posted September 15, 2011 do whatever's noisiest Quote Link to comment
Just Joel Posted September 15, 2011 Author Report Share Posted September 15, 2011 So more noise with the fixed fan... I never really heard this thing run, how much of a difference is there? Thanks Joel Quote Link to comment
izzo Posted September 15, 2011 Report Share Posted September 15, 2011 lol. it is more noisy for sure. if you can, go for the clutch fan. I like the static ones better for looks, but the clutch is cool. I can mob my 620 down the road and not hear the extra noise from the fan. Quote Link to comment
Z-train Posted September 15, 2011 Report Share Posted September 15, 2011 Fixed fan is INFERIOR in every way. Quote Link to comment
]2eDeYe Posted September 15, 2011 Report Share Posted September 15, 2011 Until the fan clutch dies and your motor overheats...or it locks up and sounds like a prop motor. I guess I'll be the first to say it....Go electric. 1 Quote Link to comment
datzenmike Posted September 15, 2011 Report Share Posted September 15, 2011 Fixed blade may be quieter. Clutch fans have 7 or 8 blades so would be noisier if spinning at engine speed. The clutch limits the RPS to around 1,500. It moves more air at low speed than fixed. At any vehicle speed above 25-30 you don't even need a fan. Quote Link to comment
NOTES... Posted September 15, 2011 Report Share Posted September 15, 2011 2eDeYe' date='15 September 2011 - 07:37 AM' timestamp='1316097437' post='547305']Until the fan clutch dies and your motor overheats...or it locks up and sounds like a prop motor. I guess I'll be the first to say it....Go electric. Yeah.. I put he should put Slim fan in it too... CLeaner look and No worries about clutch failing and possibly cuttin your hands if accidently placed in shroud... Quote Link to comment
Just Joel Posted September 15, 2011 Author Report Share Posted September 15, 2011 Alright, next question is where can I buy a water pump with a cast impeller? Thanks Joel Quote Link to comment
albyneau Posted September 15, 2011 Report Share Posted September 15, 2011 Go with a fixed- blade fan, but don't just buy anything! First off, there's no such thing as an aluminum flex fan~ the hood on my old '80 K30'd testify to that. Second, fan noise is related to blade spacing~ not the clutch (or lack thereof). Fans, just like any other rotating component, create noise. Even blade spacing introduces harmonics to that noise~ find a fan that has staggerd blades.That it, unless you want it to sound like it's powered by an air conditioner.... 1 Quote Link to comment
banzai510(hainz) Posted September 15, 2011 Report Share Posted September 15, 2011 the cast Jap "Atsugi: marked are better than the Jap GMB stamped ones but If I had a Stamped one I would run it. Just make sure you have good anti freeze to help from cavitating. youll need to find a auto warehouse that has this with a photo. I always ck Rockauto.com but my Favorite was Mr Auto-parts which had all the OEM stuff but they not around anymore. If in dought go to dealer or nissanparts.cc if you have a part number Quote Link to comment
ggzilla Posted September 16, 2011 Report Share Posted September 16, 2011 Incorrect: No fan clutch = less stress on motor and such so more hp Fan clutch = more hp, because the fan is limited to RPM and/or disconnects when warm. Nissan used either type in various years and models. But on the other hand, fixed fan is more reliable. Fan clutch only lasts about 20 years or so. Fan clutch is also larger for more cooling and was used on A/C models. Quote Link to comment
datzenmike Posted September 16, 2011 Report Share Posted September 16, 2011 GOOD... BAD... . Quote Link to comment
Just Joel Posted September 18, 2011 Author Report Share Posted September 18, 2011 So I'm trying to track down a cast impeller fixed water pump with limited success... What brands have cast impellers? Thanks Joel Quote Link to comment
Just Joel Posted September 18, 2011 Author Report Share Posted September 18, 2011 I found this one but I'm less than optimistic about the quality... Click Also this one but again, I'm not sure about the brand... Click again Any experience with these two? Or suggestions of brands I should look at? Thanks Joel Quote Link to comment
metalmonkey47 Posted September 18, 2011 Report Share Posted September 18, 2011 I found this one but I'm less than optimistic about the quality... Click Also this one but again, I'm not sure about the brand... Click again Any experience with these two? Or suggestions of brands I should look at? Thanks Joel Autozone water pumps are great. I sell them all day long, with a lifetime warranty and only once in a year 1/2 have had to warranty one of them. Never had a complaint about them. I'll try an d see who the manufacturer of our pumps are Quote Link to comment
izzo Posted September 18, 2011 Report Share Posted September 18, 2011 Autozone water pumps are great. I sell them all day long, with a lifetime warranty and only once in a year 1/2 have had to warranty one of them. Never had a complaint about them. I'll try an d see who the manufacturer of our pumps are Thats because after they break in 2 months people just say fuck it and go elsewhere. Ive had to warranty 3 alternators and getting ready to throw this water pump thru the new autozone up the road. :fu: 1 Quote Link to comment
metalmonkey47 Posted September 18, 2011 Report Share Posted September 18, 2011 Thats because after they break in 2 months people just say fuck it and go elsewhere. Ive had to warranty 3 alternators and getting ready to throw this water pump thru the new autozone up the road. :fu: lol Highly doubtful Alternators are shit, but a totally different manufacturer. Our water pumps are generally (not gonna say ALWAYS) a little bit better then anyone else's. I have my LZ water pump from Autozone and my A series waterpump from Autozone. No complaints. Quote Link to comment
Just Joel Posted September 18, 2011 Author Report Share Posted September 18, 2011 Ended up ordering this one... from what I could research, these are as close to a Japanese water pump you can get these days... Hopefully it has the cast impeller when it shows up :mellow: Later Joel Quote Link to comment
banzai510(hainz) Posted September 19, 2011 Report Share Posted September 19, 2011 Paraut= repakaged Jap OEM Atsugi = GOOD where you get it from I hear Carquest carries alot of good Jap parts but havent been there myself Quote Link to comment
Recommended Posts
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.