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#4801 |
Registered User
Join Date: Oct 2018
Location: Warsaw IN
Posts: 896
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Re: What did you do with your truck today, Part 3
I still can't decide if I should try to cut the grooves in my $280 pulley myself of take to a machine shop. She's an eight ribber. So I played with doing it today on a piece of scrap. I have the specs. It's 40 degrees with a .015 radius and spaced at .140. I have a bunch of cobalt tools that I bought off ebay and found one close that I ground at 40 degrees and then fit it to the other pulleys. If I take it in they are going to want $100-$200 and take a week or two to do it. I think I can pull this off with a little more practice. I got some chatter but haven't set the speed right yet and probably should come in at 39 degrees or something instead of straight. I'm going to order a Gates belt for comparison while I make it. I'm just using a piece of tape to measure it. I hope that works. It looks like I have about 120 degrees contact on all the pulleys. Is that enough for the alternator? I was hoping by going 8 rib to avoid a tensioner. Thank you for your time.
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#4802 |
Registered User
Join Date: Feb 2010
Location: Lebanon, Ohio
Posts: 1,359
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Re: What did you do with your truck today, Part 3
Personally, I would do it myself if I had the lathe. You will get much less chatter from the real part if you can use an inside chuck on the pulley.
__________________
Bob "It won't take long and it won't cost much." '55 3100 (383/700R4)--'55 Belair Sedan (350/4-speed)--'64 'Vette Conv. (327/4-speed)--'68 GTO Conv. (462/4-speed)--'69 Cutlass Conv. (350/TH350)--'06 'Vette Conv. (LS2/6-speed) Bob's Retirement Build - My 55 TF Bob's 700R4 Build (how-to) |
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#4803 |
Registered User
Join Date: Oct 2018
Location: Warsaw IN
Posts: 896
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Re: What did you do with your truck today, Part 3
Good point. I have way too much stick out but I didn't want to cut it and waste it. Is it necessary to come in at an angle like cutting threads? I will put the 4 jaw on for the real part from the inside. I think on a 60 degree thread you come in at 29 degrees so maybe 19 degrees? Another big question is if I pull this off, should it be polished or black like the other 2 pulleys. The head and valve cover will be polished and the 6-71 and carbs are polished. I will have to call them to find out what finish is on there now.
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#4804 | |
Registered User
Join Date: Feb 2010
Location: Lebanon, Ohio
Posts: 1,359
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Re: What did you do with your truck today, Part 3
Quote:
With all the bling you've got going on, it has to shine! I'd call too, to be sure what the part finish is, but I'm 90% sure it's powder coated. Maybe someone here could chime in on the best way to remove powder coat, or YouTube it. I'm sure you know this, but don't over-clamp the part and distort it. Be sure also that the pulley will be beefy enough after the machining.
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Bob "It won't take long and it won't cost much." '55 3100 (383/700R4)--'55 Belair Sedan (350/4-speed)--'64 'Vette Conv. (327/4-speed)--'68 GTO Conv. (462/4-speed)--'69 Cutlass Conv. (350/TH350)--'06 'Vette Conv. (LS2/6-speed) Bob's Retirement Build - My 55 TF Bob's 700R4 Build (how-to) |
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#4805 | |
Registered User
Join Date: Oct 2018
Location: Warsaw IN
Posts: 896
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Re: What did you do with your truck today, Part 3
Quote:
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#4806 |
Registered User
Join Date: Jun 2017
Location: upper midwest
Posts: 1,129
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Re: What did you do with your truck today, Part 3
Bath time and some cruising, it hasn’t been out of the garage since October...
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#4807 |
Registered User
Join Date: Oct 2018
Location: Warsaw IN
Posts: 896
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Re: What did you do with your truck today, Part 3
I didn't get any work done but I ordered A Gates regular quality 8 rib K style mini V-belt for mock up and sizing. From McMaster Carr I ordered some stainless steel countersunk hex bolts for the water pump and an 82 degree spiral cut countersink bit for the mill. Also a 3'/8" to 5/16" bushing for the alternator. I'm not sure where my blower belt ends up but the bolt heads sticking out of the water pump pulley would possibly impede on that plane. I contacted the pulley company and found out it has a type 3 anodizing. I called a local anodizing shop about stripping and recoating it black when I get done messing it up. They also said it wont damage my tooling. I contacted the acoustic glass manufacturer to find out where to send the patterns so they can make my glass. Just a normal do nothing day. One off is so much fun. I think probably most people don't realize how much time is spent on this stuff. Be polite and beg if necessary and most people are quite helpful. Thank you for your time.
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#4808 |
Registered User
Join Date: Mar 2013
Location: albuquerque New Mexico
Posts: 522
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Re: What did you do with your truck today, Part 3
put the front and side hood emblems on. it was a mess. i fabricated some new mounting straps to replace the bent up originals. looks good now
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#4809 |
Registered User
Join Date: Oct 2018
Location: Warsaw IN
Posts: 896
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Re: What did you do with your truck today, Part 3
I received my belt and practiced my grooving technique some more yesterday. I'm feeling more confident now. Hopefully my bolts and countersink come today. I also got my bushing for the alternator. The water pump bolt is 5/16" and the alternator bolt is 3/8".
Last edited by mick53; 03-20-2021 at 10:23 AM. |
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#4810 |
Registered User
Join Date: Feb 2010
Location: Lebanon, Ohio
Posts: 1,359
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Re: What did you do with your truck today, Part 3
Don't leave the peaks so sharp that they cut your belt.
__________________
Bob "It won't take long and it won't cost much." '55 3100 (383/700R4)--'55 Belair Sedan (350/4-speed)--'64 'Vette Conv. (327/4-speed)--'68 GTO Conv. (462/4-speed)--'69 Cutlass Conv. (350/TH350)--'06 'Vette Conv. (LS2/6-speed) Bob's Retirement Build - My 55 TF Bob's 700R4 Build (how-to) |
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#4811 |
Senior Member
![]() Join Date: Oct 2016
Location: Olympia, WA
Posts: 523
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Re: What did you do with your truck today, Part 3
Mick53 here is what you need.
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#4812 |
Registered User
Join Date: Oct 2018
Location: Warsaw IN
Posts: 896
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Re: What did you do with your truck today, Part 3
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#4813 |
Registered User
Join Date: Oct 2018
Location: Warsaw IN
Posts: 896
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Re: What did you do with your truck today, Part 3
The water pump pulley I'm adapting I believe is for a reverse rotation Ford application. The hole for the shaft is 3/4" on the spacer with countersink and 5/8" on the water pump so I made this adapter.
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#4814 |
Registered User
Join Date: Feb 2010
Location: Lebanon, Ohio
Posts: 1,359
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Re: What did you do with your truck today, Part 3
Yeah. Don't pay too much attention to me. I'm just writing stuff that I'd be sayin' if I was standing at the lathe with you...
__________________
Bob "It won't take long and it won't cost much." '55 3100 (383/700R4)--'55 Belair Sedan (350/4-speed)--'64 'Vette Conv. (327/4-speed)--'68 GTO Conv. (462/4-speed)--'69 Cutlass Conv. (350/TH350)--'06 'Vette Conv. (LS2/6-speed) Bob's Retirement Build - My 55 TF Bob's 700R4 Build (how-to) |
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#4815 |
Registered User
Join Date: Oct 2018
Location: Warsaw IN
Posts: 896
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Re: What did you do with your truck today, Part 3
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#4816 |
Registered User
Join Date: Mar 2013
Location: albuquerque New Mexico
Posts: 522
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Re: What did you do with your truck today, Part 3
im working on getting my cab sealed up. slow and steady. i have a nice firewall cover to put in but i need to get some hush mat installed first
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#4817 |
Registered User
Join Date: Jan 2010
Location: Ashley Ohio
Posts: 9
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Re: What did you do with your truck today, Part 3
Getting some satin clear on
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#4818 |
Registered User
Join Date: Oct 2018
Location: Warsaw IN
Posts: 896
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Re: What did you do with your truck today, Part 3
I have been working on my water pump pulley. I started cutting the grooves and it did not go well. I had a really hard time cutting the first groove and stopped before I messed it up. I worked on the front and let the problem stew in my little brain. I was ready to take it in when it occurred to me That the tool may be dragging on the pulley due to not enough relief cut on the tool. I will have to set it back up and take a look at it. I think it may have worked on the test piece due to the smaller diameter. Still rolling that around in my little brain. I countersunk the new bolts in the front of the pulley so they didn't project into the blower belt plane. There are 8 holes (2 bolt patterns) so I had to fill them all up. I cut .300" off the stainless steel bolts and chamfered them because I'm a civilized man. My lathe is super cool for cutting bolts. Of course I had to sand and polish them for aerodynamic reasons. I still need to take about .040" off the pulley spacer. I'll do that last. I may try to make a new tool and try to complete the grooving or puss out and take it in. Thank you for your time.
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#4819 |
Registered User
Join Date: Jul 2007
Location: Toppenish, WA
Posts: 15,503
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Re: What did you do with your truck today, Part 3
Dang that sure outdoes my measuring some doors to see where I am going to cut them to take two and make a longer one.
The wind is blowing so hard here that is a pain to try to do anything outside today.
__________________
Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around. |
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#4820 |
Senior Member
![]() Join Date: Oct 2016
Location: Olympia, WA
Posts: 523
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Re: What did you do with your truck today, Part 3
mick53 if your tool height is correct, it looks like it is more of a speed issue, 2024 cuts differently then 7075. I do this 8 hours a day 5-7 days a week.
Jim W |
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#4822 |
Registered User
Join Date: Oct 2018
Location: Warsaw IN
Posts: 896
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Re: What did you do with your truck today, Part 3
I thought this was 6061 that I also know nothing about. The test piece I did was 6061. Should I call ID Designs and find out for sure what it's made of? When I did the countersink it seemed to cut fine. ?. My tool is also kinda Mickey mouse. This pulley diameter is 5.90". What spindle speed do I need?
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#4823 | |
Senior Member
![]() Join Date: Oct 2016
Location: Olympia, WA
Posts: 523
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Re: What did you do with your truck today, Part 3
Quote:
if using high speed steel it would be 324-388rpm Jim W |
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#4824 |
Registered User
Join Date: Dec 2011
Location: Moxee WA
Posts: 1,470
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Re: What did you do with your truck today, Part 3
trying to identify the 12 bolt truck rear axle thats in my '49. I know there should be an id number on the axle tube behind the right rear wheel but 70 + years of grease and crap and i cant find it. wire wheel doesnt cut it. may have to take the axle out and media blast it. all this to figure out what drum brakes i have in the rear.
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49 chevy 3100 3 window. 327 / m21 4 spd, 12 bolt w/ 3:55's Bought in 1973 for $235.00. Had it longer than my wife & Kids!! |
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#4825 |
Registered User
Join Date: Oct 2018
Location: Warsaw IN
Posts: 896
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Re: What did you do with your truck today, Part 3
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