Anyone know where I could get 2 of them?

 

^^^

 

i think majestic turbo has them

 

Autometer #3277
1/8npt-4an fuel restrictor
*might need to bore out slightly*

 

Thank you!

 

What does an oil feed line restrictor do for you?

 

It reduces the oil pressure in the line, so that the turbo will have less of a chance of blowing the oil seals.

 

So if you go to small you can starve the turbo of oil?

 

Actually it reduces the flow volume and not pressure. Sometimes when an unrestricted inlet is used the center housing will overfill because it is filling faster than it is draining. The pressurized oil usually seeps past the GOOD oil seals and into the exhaust/compressor because the oil seals are weakest link inside of the center housing. Overfilling is a flow volume associated problem.

 

And it's the problem I have.......which begs the question, is it better/easier/cheaper to get a restrictor or change from -4 to -3 on the feed line?

And BTW think I figured something out the other day. It only does it when the engine is cold and I run 5W30 just like Honda says to on my oil filler cap! I am going to try 10W30 this coming oil change to see if there is any difference...


[Modified by mplex2000, 3:25 AM 3/14/2002]

 

That is the exact problem I am facing right now too. Ol is not draining fast enough so its building up and gong through the seals. I mean, I even have oil shooting out of my BOV. No blue smoke yet or rough idle...thank God!!

How many people use those things, I have never heard of it until lately for our turbo charged Hondas?

 

Here, I found a pcture of one just on case you guys were curious before purchasing. BTW, it is referred to as a nitrous/fuel restrictor.

The part # a http://www.summitracing.com is ATM-3277

 

that nitrous port is too small! I'll check the size of the restrictor on my extra turbo tonight.

 

So is it a better idea to go with the -3 instead of 4 on a t3t4 b16?? Im about to order my line, just wondering which is better....If I get the 3 is there a chance the turbo wont get enough oil??

 

you could drill that thing out

 

definitely drill it out because you would only be getting a trickle of oil.

Here's a pic of the one that I use.

 

My oil feed setup (greddy kit) basically has a -3 line going from the block to a set of tees with my oil pressure & temp sensors, and then going to the turbo through a rather large greddy-supplied line (not sure what the size is)

Originally I had the tees directly on the block;
with the tees on the block, my oil pressure gauge showed 75psi when driving around, now with the -3 line (about 20" of -3 between the block and the tees), i see 50psi of pressure. I would imagine that a -3 line the whole way would give you 40-50 psi of pressure at the turbo...

-Xerxes

 

[QUOTE]definitely drill it out because you would only be getting a trickle of oil.

Here's a pic of the one that I use.

I might have a problem with oil coming up the threads of the fittng with a restrictor in that position. Wouldn't it be better to have the restrictor coming off the tee from the block? Or is the general consensus to just get a -3 line?

Anybody know what size line comes with the Drag Gen III kit?

 

I would put the restrictor as far downstream as possible. If you put it at the block, it's going to restrict flow through the entire feed line, possibly causing extra time to fill the line AND the bearing housing. I'd rather fill the line as fast as possible and restrict flow just to the housing. Theory of course.

Oh, and my DRAG line is -4AN.

 

drealgsr:

What size hole is that? How did you know which size hole to use?

 

BTW...Good topic!

 

The hole in the restrictor that dreal posted looks close to -3

 

When you say -3, do you mean the ID of a -3AN fitting?

 

sorry guys but I forgot to measure the restrictor! Work, school and teaching english everyday is kicking my ***! I'll make sure that I do it tonight before getting tanked!


Dee

 

Lets think about that for just a second. what would be the point of comparing it
to the OD of a -3 fitting/line??