Give Me Your Opinion
08-28-05, 12:50 AM
#1
Give Me Your Opinion
Im going to build a rx7 soon and i just want to get some opinions on this setup(New rotor housings, new oil pump and chain, high pressure oil regulator, 3mm apexi seals W/ dual springs, rotors raced cleared, rotor housing cooling mod-which is when u cut cooling fins in the hot spots in the rotor housing, Two piece eccentric shaft, and street ported) run a T66. Thats just what i wanna start w/ first let me no what u think.
08-28-05, 01:06 AM
#3
mattg prob nt coming back
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^ well i have heard kevin standing up for 3mm saying that the everything else will break but the 3mm seal. kinda makes you think that they are indistructible
08-28-05, 01:16 AM
#4
Qwiksillva
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There are several arguments in this but here are some facts:
1. To make a 3mm seal fit perfectly... the mill of the rotor has to be perfect. Perfection is nearly impossible. Which causes an imperfect seating of the seal.
2. By milling the rotor, you have exposed fresh metal which has a slightly different hardness than the metal that originally seated with 2mm seals.
3. There really isn't (to my knowledge) any hard evidence that proves 3mm seals are better for higher boost settings.
4. About as many 3mm seal engines detonate theirselves as 2mm seal engines (proportionately-speaking).
5. Finally, of all the RE specialist shops in Japan, all of them recommend/prefer 2mm seals.
Oh Yeah and I also forgot this one.
6. There is no proven advantage to it withstanding higher heats. Since there is more volume of substance of the a seal with 3mm, it can absorb much more heat. By absorbing more heat, the potential for damage to a 3mm seal from extreme temperatures exists just as well as it does in the 2mm seals.
1. To make a 3mm seal fit perfectly... the mill of the rotor has to be perfect. Perfection is nearly impossible. Which causes an imperfect seating of the seal.
2. By milling the rotor, you have exposed fresh metal which has a slightly different hardness than the metal that originally seated with 2mm seals.
3. There really isn't (to my knowledge) any hard evidence that proves 3mm seals are better for higher boost settings.
4. About as many 3mm seal engines detonate theirselves as 2mm seal engines (proportionately-speaking).
5. Finally, of all the RE specialist shops in Japan, all of them recommend/prefer 2mm seals.
Oh Yeah and I also forgot this one.
6. There is no proven advantage to it withstanding higher heats. Since there is more volume of substance of the a seal with 3mm, it can absorb much more heat. By absorbing more heat, the potential for damage to a 3mm seal from extreme temperatures exists just as well as it does in the 2mm seals.
Last edited by TII: Judgement Day; 08-28-05 at 01:18 AM.
my hats off to you sir. you know your ****. you should listin to this guy 
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