air gap nytralon and case

air gap nylatron and case

at how mutch air gap its time too restrip blower .
i have 14-71hh front dishard and with a long feeler gage 0.011 pass free ,i run this blower on bae5 at 29od boost 30lbs.teflon look good .but nylatron around 0.005 above rotor

 

I always go buy feel...you might ask Littlefields see what thay say, ask for Andy he is very smart on blowers.Dave

 

its realy easy too turn( two finger) . i use two year on bbc at 14od and last year put on bae 456ci around 75 pass on it and i never use prizm gel.and for the boost i don't know because change engine
how is air gap when new or refresh?

 

The clearance between the nylatron and the case must be measured at the bottom opening of the case. Anything over 5 thou clearance is worn out. The trick is to machine the nylatron so there is zero clearance, but so you can still turn the blower over fairly easily with a small ratchet.

 

I set them up with .002 on the bottom, they will have 007-008 on the sides,from rotor to case, the Teflon wear is more critical than the nylatron, it sounds to me like it's time for a complete restrip, and also check over everything else to make sure nothing is going astray

 

thank you for your replies.i will rebuild it myself (nylatron and teflon ).i live too far for shipping(6 inch of snow today) .
if you have any recommadation. i see rotor on lathe,it seems run fast.
recommend you of pass the bottom of case on milling

 

turn rotor about 800-1000 rpm, feed the tool slow as possible, take a rough cut about .030 bigger than final cut, there should be a number stamped on the front lower right of case, this will tell you what the OD of the rotor should be, std is 5.780 + that #, hope this helps

 

I told you Andy Is the GUY..Dave
also get prizm and hose that blower down inside I also use it on my valve train,I'm a dealer for prizm but rite now I'm not sell it I will start back up but just burnt out on selling it, not enough time in the day

 

yes dave andy is the guy valuable information

 

Years ago we shipped just our rotors to Andy and crew to save on shipping as we didn't want to ship all 3 blowers plus we saved on assembly/disassembly costs. You need a damn good lathe to cut those strips accurately over 16-19" in length...