Greddy Pullies and Main pulley belt size?
12-27-01 | 03:54 PM
#1
Thread Starter
Retired RX7 mechanic
Joined: Feb 2001
Posts: 999
Likes: 0
From: Long Island, NY
Greddy Pullies and Main pulley belt size?
Are any of you guys using Greddy water and alt pullies with a aftermarket Main pulley?
What size are you using? And where can I get it? I can find the size anywhere....
Please help me out if you can....
What size are you using? And where can I get it? I can find the size anywhere....
Please help me out if you can....
12-27-01 | 04:06 PM
#2
Rotary Enthusiast
Joined: Feb 2001
Posts: 1,038
Likes: 52
From: Edmonton
Which aftermarket main pulley are you using? Unorthodox? SR? RP?
The powersteering pulley/AC belt should be the one the manufacturer of the main pulley recommends.
As to the water pump and alternator are you worried at all about turning the water pump too slow? I can accept the alternator spinning much slower than stock (dimming lights at idle), but what about overheating?
You can measure with a string and find an appropriate length belt.
the_saint
The powersteering pulley/AC belt should be the one the manufacturer of the main pulley recommends.
As to the water pump and alternator are you worried at all about turning the water pump too slow? I can accept the alternator spinning much slower than stock (dimming lights at idle), but what about overheating?
You can measure with a string and find an appropriate length belt.
the_saint
12-27-01 | 05:49 PM
#5
Rotary Enthusiast
Joined: Oct 2001
Posts: 793
Likes: 0
From: cambridge
ive just gotten the full unorthodox pulley set. Can anyone tell me what length belt i need for the air pump removal and what the length of the other belt is. i can see that one is a 5 rib and the other a 6.
12-28-01 | 01:11 PM
#7
Weird Cat Man
Joined: Aug 2001
Posts: 2,868
Likes: 3
From: A pale blue dot
HAHAHAHAH
This is so funny that this just came up!!!!
I just spent about a week tracking down a belt for my setup.
I'm going to try to use the Greddy underdrive alternator/water pump pulley set with the Unorthodox Racing underdrive main. (Air Pump is gone)
A 28 inch (710 mm) belt is too short...
I ended up buying a "Goodyear 4060290" - THIS IS A 6 RIB belt that is 29.0 inches. I just took a pair of scissors and carefully cut off one rib. This seems to work OK for me.
I know that I'm going to be underdriving the **** out of my WP and ALT, but I plan on keeping the car above 4000 rpm all the time (not a daily driver)... So I hope this works out long term....
Brian
87 TII
93 R1
This is so funny that this just came up!!!!
I just spent about a week tracking down a belt for my setup.
I'm going to try to use the Greddy underdrive alternator/water pump pulley set with the Unorthodox Racing underdrive main. (Air Pump is gone)
A 28 inch (710 mm) belt is too short...
I ended up buying a "Goodyear 4060290" - THIS IS A 6 RIB belt that is 29.0 inches. I just took a pair of scissors and carefully cut off one rib. This seems to work OK for me.
I know that I'm going to be underdriving the **** out of my WP and ALT, but I plan on keeping the car above 4000 rpm all the time (not a daily driver)... So I hope this works out long term....
Brian
87 TII
93 R1
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