New Mod: 3.4L TB Bore Mod, “O” Gasket Mod, and PCV Breather Mod – with pics
03-02-2004, 06:12 PM
#101
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Originally Posted by 99' 4runner
Hey christian,
I was wondering if 99' 4runner 2wd have that "O" Gasket or the D gasket?
I was wondering if 99' 4runner 2wd have that "O" Gasket or the D gasket?
03-02-2004, 10:54 PM
#105
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I believe the downside of this is that the blowby or by products of the combustion process that make it past your piston rings are not being sucked out of the crankcase and reintroduced back into the intake for reburning. The net effect of this could be an increased buildup of the harmful chemmical components in your oil, which are responsible for the break down of the oil's lubricating properties. I know some of it is being pushed out of the new breather, and this is how it was done in the old days, however, I believe the PCV process is more effecient at evacuating the gasses and reducing the rate of introduciton into your oil. IMHO
03-03-2004, 04:38 AM
#106
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The PCV mod is no longer recommended. What's the matter, you didnt want to read 5 pages of posts? 
You are correct, with the PCV mod, I could smell gasses that did not go through the Cat. In other words, it stunk.
You are correct, with the PCV mod, I could smell gasses that did not go through the Cat. In other words, it stunk.
03-03-2004, 06:51 PM
#107
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Originally Posted by ravencr
Is the part number 22275-20010 for the TRD supplied gasket that comes with the Supercharger or is this another O gasket that you guys found.
Chris
Chris
10-27-2004, 10:39 PM
#112
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Yeah i was trying to figure out what the o gasket is till i read this humungous thread. Hmm damn its raining outside so i havent verified if i have the d gasket. Hey christian i like to see some dyno runs with your tricked out NA setup..
10-28-2004, 04:59 AM
#113
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Yeah, me too. But I wouldn't expect a real nice looking dyno slip. I think the mods performed thus far have only bumped my HP + TQ in a very small RPM range - I am guessing somewhere between 3600 ~ 4600. Unlike a properly tuned SC'd 5VZ, which should show a nice linear HP increase once the parasitic drag of the SC'r is overcome.
Here is the order of power enhancements, in order of the largest gain IMO:
1. Headers
2. Gear ratio change (4.10 - 4.30)
3. Deckplate mod
4. Exhaust (hacked out stock muffler, welded in glasspack)
5. ISR mod
6. TB bore
7. Type O gasket mod
5 - 7 were not noticeable by the seat of my pants.
Here is the order of power enhancements, in order of the largest gain IMO:
1. Headers
2. Gear ratio change (4.10 - 4.30)
3. Deckplate mod
4. Exhaust (hacked out stock muffler, welded in glasspack)
5. ISR mod
6. TB bore
7. Type O gasket mod
5 - 7 were not noticeable by the seat of my pants.
11-20-2004, 02:54 PM
#116
Registered User
and.....
DONE!
There're a lot of mods on my truck, and I never expected to feel something this slight (and I don't), but knowing that lip is gone gives me a bit of a smile on my face.
What I did do to get more oomph during this pass under my hood was to... realize that my throttle cable had about 1/4" of slack in it. oops.
Thanks for the idea Christian!
DONE!
There're a lot of mods on my truck, and I never expected to feel something this slight (and I don't), but knowing that lip is gone gives me a bit of a smile on my face.
What I did do to get more oomph during this pass under my hood was to... realize that my throttle cable had about 1/4" of slack in it. oops.
Thanks for the idea Christian!
