I have a question i need some help on turbo oil line feeds and return on my 4.8 since i bought a turbo car off a member and his problem was cause he didnt get sufficient oil to his turbo so it blew and i am not wanting that problem so i want to fix that problem this time before i even drop in another turbo. Ima be using the gt45 y2400k turbo off ebay seen some decent review out of it.
Thanks.

 

-4 feed an a -10 drain no restrictor unless u have ridiculous oil presure like i do on my 3.1 ( 65psi hot idle - 105-110 psi hot @ redline )


im going to assume he used a -3 which is fine for most t3 or t3/t4 and turbos like a t61 or t70 or he was picking up the oil from a bad location

 

Yeah i think a -4 is all it will need. As big a drain as you can fit, generally -10 is minimum

 

-4 feed -10 drain

some turbos have oil restrictors built into them, so i would not add an additionl one unless your blowing oil out of the seals

 

Oh ok what is good location to have the oil feed on a ls engine? i know it has the oil return in the front engine cover but not sure where he had the feed

 

I believe it is just above the oil filter similar to a SBC

 

is it this one? also quick question how can i find out what size i have since it has a oil feed line in the trunk but looks kinda small in my opinion

 

the "an" fittings are "army navy" fittings. the -XX denotes size. each value represents how many 1/16's of an inch the inside diameter is. a -4 is 4/16" ID, a -10 is 10/16" ID.

it will be hard to measure the line (has to be held round to get an accurate measurement), so if it came with fittings measure the ID of the fittings - that will tell you what size it is

 

it has the fittings on already it looks like a very thin hose. Does it have the fitting size on the fitting somewhere? Also are the ebay oil lines good?

 

ebay lines are crap, u would just buy some fragola pushlock fittings on ebay the -4's are only a few bucks each , and get a few ft of parker pushloc hose off ebay as well
also buy the special clamps for the pushloc line its like 3.50 for a package of 6 or 10 clamps

u dont have to use them but its piece of mind that the hose wont come off the fitting


i use the same stuff above on my twin turbo iroc and never had an issue and i dont use clamps on the drian lines but the feeds do have them just for adde dinsurance

i will tell u once i assembled the hose me and a friend tryed to pull it apart and i think i would have better luck tearing the hose then getting the fitting back out

 

If it aint too much to ask can you send me the links to exactly what i need sorry im new to this and aint sure if im looking at the correct things

 

sure man give me about 15 mins and ill have some links posted up

though u will have to decide if u need stright or 45*90* type fittings to run ur lines

basically u should need 2 1/8th npt to -4 adapters
and 2 -4 hose ends in either stright 45* or 90*
and a few ft of the hose
and a package of clamps

 

2 of these http://www.ebay.com/itm/RedHorse-4-P..._Parts&vxp=mtr

and however many ft of hose u need http://www.ebay.com/itm/4-Super-Stoc..._Parts&vxp=mtr

cant seem to find the clamps

 

Ok those fittings you put the link of is for the feed correct?

 

yeah for the drain just get -10 stuff

 

is there a certain way i should run that hose since i think it will be passing through my exhaust manifolds gonna be going through some heat for sure

 

I was doing some research and i found out i have a 4an with a restrictor for the feed you think that could have been what caused the problem for the turbo to poop out?

 

What do you guys think of this turbo for $280 he said its a gt40 but not 100%sure

 

^^^ pass...

 

why to small? it has a bigger a/r housing then the ebay gt45

 

was the other turbo journal or ball bearing, u never use a restictor with journal bearing turbos unless u have super high oil presure and even at that point its larger then one u would use on a bb turbo

 

Small...and looks like crap. Also looks like its rebuild time.

-that lil think has issues...in the wallet area

 

http://www.godspeedperformance.com/t...-p-247106.html
this is the turbo he had i believe its journal bearing not sure though. Im barely learning about this turbo stuff right now thats why i wanna get everything right dont wanna end up blowing my new turbo as well.

 

those are journal turbos shouldnt have been using a restrictor at all

 

OH ok so that was probably the cause of his failure then. Also as for the turbo i posted of you think i should buy it? hes asking $280 for it found out it came off a 6.8 diesel truck

 

well went to go see the garrett turbo it turned out to be really small turbo so ima stay with my gt45 plan found one for $150 hopefully lasts

 

the ebay gt45 is a big beefy turbo just go read the reviews of it on the turbo forums iirc it wieghs in at 37-43lbs the inducer on the compressor is 70mm and i think most guys are maxing them around 500-625ish whp for a single

if u look on youtube there is a big block car running a pair for 3 years now making 1,100+ to the tires if everything is good with the setup there is no reasom that turbo shouldnt live a long time


the one u found for 150 is it new or used

 

Yeah ive read lots of good things about them that is why i wanna get the setup done right that way it lasts me. Also since ive seen a gto at 4000lb run 10.75@135mph with a 4.8 and just a ls9 cam so im expecting about a low 10s with my cars weight

It is customer return but they look new im thinking of going to see them and see if they have any play on them since they look brand new still, he has two one with internal wastegate hes asking $150 and for the external wastegate one hes asking 180. which one do you recommend me to get?

 

those dont sound liek an ebay gt45 they do not have that turbo with an internal gate.

honestly i would buy one new from ebay, also u will have to buy the downpipe vband from ebay as well i dont know of an off the shelf one that works with that turbo

260 bucks free shipping right here
http://www.ebay.com/itm/GT45-HUGE-V-...5de211&vxp=mtr

 

What v band is neede for these a 3.5? since i have one from the old turbo but looks like its a 3in one not 3.5

 

just search ebay for gt45 vband or check on the turbo forums for the correct v-band

 

OK well i bought that turbo you posted in the link. Once i get the turbo ima just ask the guy whos gonna do the down pipe for me to buy the v band

 

well today looking at build thread on ls1 tech i found a master power local for $340! brand new you think thats better then running the ebay turbo or should i just keep the ebay turbo?

 

what size is the mp?

 

its a mp gt45 brand new

 

just use the ebay turbo they are identical

the ebay turbo is a copy of the mp gt45, uve read the reviews on the gt45 i don tthink there is a signle failure or mishap with the ebay version anywere on the turbo forums

 

Yeah no bad reviews only bad reviews where the ones people would say of their buddies but no first hand review. I was also wondering why is it that the gt45 has a small turbine? compared to other turbos was reading on another forum that a turbonetics t72 is better is this true?

 

the gt45 does not have a small turbine by any means on ur typical 350 gen 1 engine it will spool around 3k lil sooner on the ls engine.iirc the turbine wheel is 72/90 mm or something close to that

and the turbonetics is a better turbo but its going to cost u what 2x maybe a lil more then that over the gt45

just use the gt45 as it should be, an excellent budget turbo for a small block engine

 

oh ok its because now that i purchased this ebay turbo all kind of deals are coming to me like my friend has a t72 with 3000 miles its the ball bearing one and he will sell it for $300 to me, then this mp gt45. So i wanna know what is best for me that way i install the best one that suits me best. Sorry for asking so many questions. Noob at this turbo stuff i might just end up buying all of them and just to not let the deals pass since i know all of these are great prices and could make my money back.

 

300 bucks for a ball bearing t72 ?????? does the guy need money that bad or something cause that very friggen cheap for any ball bearing unit

 

Being laying around in his shop for over 6 months thats why hes asking 500 but i offered him 300 and he said to take it so you think i should go for it?
heres some pics almost looks like new no play at all on the shaft

 

Ended up buying it and let me tell you i could already see difference on the ebay turbo when i went to see the ebay turbo the shaft had some very lil play and this mp has nothing at all even when i move it with lots of force, and you where not lying about this turbo being a monster it weighs 30lbs.

 

did u buy both? all turbos will have a lil play when brand new and never used.cause there is oil between the shaft and bearings.

i was going to tell u if the turbonetics is infact a ball bearing to just buy it if u had the extra money cause u could sell it and make ur money back plus a bunch

just be sure its a bb unit of its not u could prolly sell it for 5-600
if it isa bb unit u coupld prolly sell it closer to 800

 

So far only bought the gt45.

Good to know then ima buy it to resell it then i did not know they went for that much.

What would be a better candidate though the t72 or the gt45? is there a certain way i could calculate what turbo would be better for me?

 

hp goals ? this is ging on a stock ls engine right

yrah go look up what one of the t72's cost brand new
the mp gt45 is only a 5-600 turbo brand new

 

T72 with good turbine wheel is nice for a 500-600 whp stock ls1 type build. Then again so is a gt45

I may be gt45 remote turboing a 99 fbody

A 4.8 can handle more than the ls1's so t72 should give more room to grow.600-700 whp

 

correct stock 4.8 for now in a year ima drop in a lq4 with some forged pistons and rods but for now just want to do another 4.8 build since everyone is doing it with amazing results.
here is a vid of one love the sound of the turbo spooling

 

i have a question is there a risk if i turn my turbos compressor housing? since it hit my radiators the way its facing if it wasnt for that it would fit perfect
is this video the proper way to do it?

 

i didnt watch the video but u losen the 6-8 bolts on the back of the compressor housing rotate it to were u want and then retighten the bolts. u can also do this on the turbine side as well .

more then likley u will have to do both sides to get the feed and drian in the right locations

 

Oh ok do they have to be torqued to a certain spec?

also to do it right the feed has to be up and return has to be straight pointing down correct?