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Porting Nissan's Sr20


oldeskewltoy

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  • 2 weeks later...
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sludge2.jpg

 

eeeeew.... quite a bit of sludge here..... its a good thing this head, and all the hardware are getting cleaned

 

a fair bit of sludge inside the VVL followers as well.....

 

rocker_gif.gif

 

 

 

 

a fair bit of sludge inside the VVL followers as well.....

 

plugged pretty solidly.... This is the return plunger oil drain for the VVL' date=' with this plugged, the VVL follower can't engage, because it can't push against this slug.

 

[img']http://ost.ebeans.ch/albums/userpics/10005/plugged_oil_passage1.jpg[/img]

 

Slug is quite accurate, on this VVL follower, when the VVL was pushed, I had to apply substantial effort, and when I did a solid crud slug popped out...

 

 

It wasn't always the return plunger, below is the feed hole to the VVL actuator...

 

plugged_oil_passage_2_panel.jpg

 

not going to get a lot of movement when it is substantially clogged.

 

 

 

 

 

more to come..... :D

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  • 3 weeks later...
  • 1 month later...

How did this pan out with testing mate ?

 

 

exhaust:

.100 - 75cfm

.200 - 144

.300 - 177

.400 - 198

.500 - 206

 

 

Intake:

.100 is 85

.200" is 159

.300" is 217

.400" is 249

.500" is 265

 

 

head is assembled... all Supertech hardware

 

valves_installed2.jpg

 

 

in the process of checking valve clearances on a set of Franklin cams using 2.55mm shims as a base

 

checking_valve_clearance_only_one_shim.jpg

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