T28 Turbo Line and Restrictor

[dongoesby]

I've researched and understood the importance of an oil restrictor for our T28. However, I'm still confuse if it is an individual unit that acts as an adaptor in between the turbo line and the turbo?

I've found that a normal T28 turbo line (Circuit Sports) costs around $110, but a stand-alone turbo line (Earls) included restrictor costs almost $60 more. Is this simply an additional restrictor included in the so called "stand-alone" turbo line or something is different? An oil restrictor bascially costs $10, is there any difference? Am I safe to buy an oil restrictor to put onto a turbo line that is not "stand-alone"?

I've tried to email takamotorsports regarding this, but no replies

[Ghost240]

Originally Posted by dongoesby

I've researched and understood the importance of an oil restrictor for our T28. However, I'm still confuse if it is an individual unit that acts as an adaptor in between the turbo line and the turbo?

I've found that a normal T28 turbo line (Circuit Sports) costs around $110, but a stand-alone turbo line (Earls) included restrictor costs almost $60 more. Is this simply an additional restrictor included in the so called "stand-alone" turbo line or something is different? An oil restrictor bascially costs $10, is there any difference? Am I safe to buy an oil restrictor to put onto a turbo line that is not "stand-alone"?

I've tried to email takamotorsports regarding this, but no replies

From what I understand, the oil restrictor is in the -AN fitting.

[DaPCWiz]

Full-Race Motorsports

^^ that sir is an oil restrictor

you can also find some here:

http://www.phase2motortrend.com/babeoilretsi.html

and here:

http://www.ilovemyhookerheaders.com/966303ERL.asp


all this info was found with 1 search on zilvia, next time dig a little

[dongoesby]

Originally Posted by DaPCWiz

all this info was found with 1 search on zilvia, next time dig a little

My question is actually not where to find buying restrictor but information about restrictor. I'd like to confirm if buying a regular turbo line plus an oil restrictor seperately is same as buying a "stand-alone" turbo line.

Thanks.

[DaPCWiz]

Originally Posted by dongoesby

My question is actually not where to find buying restrictor but information about restrictor. I'd like to confirm if buying a regular turbo line plus an oil restrictor seperately is same as buying a "stand-alone" turbo line.

Thanks.

The restrictor is still the same piece whether your buy it separately or as part of a kit. All of those links were given as examples of what a restrictor looks like.

[brndck]

i think what the op is asking is:

if you buy a circuit sports kit, is the restrictor built into the an fitting already or do you need a separate one in addition to the kit.

[GSXRJJordan]

Originally Posted by dongoesby

My question is actually not where to find buying restrictor but information about restrictor. I'd like to confirm if buying a regular turbo line plus an oil restrictor seperately is same as buying a "stand-alone" turbo line.

Thanks.

Yes it's the same.

The reason most line kits don't come with restrictors is because you use a different size restrictor for journal-bearing vs ball-bearing turbos.

There you go.

[s14unimog]

^ exactly true. Typically BB turbo's have more restriction b/c they need less oil flow. At the opposite, you have a journal bearing, which relies on a thin layer of oil and close tolerances, so they need a higher flow. TAKA lines, which I use, are unrestricted from the factory.

[TeamFRAT]

Someone told me that Sr's oil pressure is low enough that I would not have to use a restrictor. Can someone add to, or smash this rumor?

[s14unimog]

Depending on the turbo, you MIGHT be able to get away with it. If you have a BB turbo, I wouldn't do it. I've heard some people say that you can get away with no restrictor on a journal bearing, but I wouldn't test it. The reason being is that there is a large spectrum at hand when considering adequate oiling, not so much with OVER oiling. My SR20 runs over 80psi @ ~5k, that is more than enough pressure to push out your seals.

I run a FP 20G on my SR and was told by them that I didn't need a restrictor; I laughed and hung up the phone. I say 1/32" (0.031") for BB and 1/16" (0.063") for journal....

[dongoesby]

Originally Posted by GSXRJJordan

Yes it's the same.

The reason most line kits don't come with restrictors is because you use a different size restrictor for journal-bearing vs ball-bearing turbos.

There you go.

thanks, exactly what i wanted to know!

[TeamFRAT]

Originally Posted by s14unimog

Depending on the turbo, you MIGHT be able to get away with it. If you have a BB turbo, I wouldn't do it. I've heard some people say that you can get away with no restrictor on a journal bearing, but I wouldn't test it. The reason being is that there is a large spectrum at hand when considering adequate oiling, not so much with OVER oiling. My SR20 runs over 80psi @ ~5k, that is more than enough pressure to push out your seals.

I run a FP 20G on my SR and was told by them that I didn't need a restrictor; I laughed and hung up the phone. I say 1/32" (0.031") for BB and 1/16" (0.063") for journal....

I scored a hell of a deal on a hks 2510 for a $110 bucks off craigslist. I ordered a .03 restrictor. Someone told me on a local fourm that they didnt require it because the sr didnt have alot of pressure. I feel otherwise now considering you got 80psi at 5k.

[GSXRJJordan]

I agree completely - SR's run just as much pressure as any other motors lol, easily 70psi - you definitely should be using restrictors. Common sizes are listed above (1/32" for BB and 1/16" for conventional).