My 86 Hachi coupe

Post by **nt66** » Fri Oct 16, 2009 8:38 pm

Its to small it won't drain fast enough and the oil backs up in the line. you need a fitting thats the same size as the one on the turbo. Lots of 4a guys blow turbo seals/turbos because they use the oil cooler return for the turbo return. I don't know maybe its just a t25 thing but I think it goes for all turbos.

mooreofit · Post by **mooreofit** » Fri Oct 16, 2009 9:03 pm

thanks for the heads up. my drain i added was a 3\8th npt barbed fitting. ill have to double check but it looks the same size on the 4age oilpan. i also ran a t25 with that 3\8 drain. the hole is actually more like 5\8ths though if you've ever seen a 3\8ths npt tap you'd know what mean. its actually recommended to drill out the hole with a 38\64 bit if i can remmember correctly.

also i have a gt series turbo now that i havnt run yet and those gt's have a restricted oil feed so im assuming it might work. if not ill make it bigger. but again thanks for the heads up.

mooreofit · Post by **mooreofit** » Fri Oct 16, 2009 9:23 pm

wow you are right!!

the hole is only 3\8th's or so on the 4age definatly needs to be larger!

MadeInThe80s · Post by **MadeInThe80s** » Fri Oct 16, 2009 9:41 pm

I was just going to tap the pan with a new one. Whats a good oil source for the turbo? what about water lines?

mooreofit · Post by **mooreofit** » Fri Oct 16, 2009 9:52 pm

as far as the oil feed i used a t and ran it from the oil pressure sending unit. the waterlines you can t from the iac.

MadeInThe80s · Post by **MadeInThe80s** » Fri Oct 16, 2009 11:29 pm

I'll have to tap elsewhere for water as I dont have the IAC hooked up.

mooreofit · Post by **mooreofit** » Sat Oct 17, 2009 7:53 am

then just use the waterlines that went to the iac.

Post by **nt66** » Sat Oct 17, 2009 12:18 pm

I teed off the water lines going to the heater core for mine

Post by **nt66** » Sat Oct 17, 2009 12:20 pm

mooreofit wrote:wow you are right!!

the hole is only 3\8th's or so on the 4age definatly needs to be larger!

yeah I heard this is more of a problem on gt series turbos apparently they are very picky about oil return. If you have a diffrent size fitting on the pan it backs up enough for it to cook the turbo cause it can't drain the hot oil fast enough. This is with a restrictor as well from what I've heard

MadeInThe80s · Post by **MadeInThe80s** » Sat Oct 17, 2009 12:59 pm

nt66 wrote:I teed off the water lines going to the heater core for mine

This is probably what I'll do since mine is already bypassed waiting to be T'd.

mooreofit · Post by **mooreofit** » Sat Oct 17, 2009 5:36 pm

thanks for the heads up will ill use a 5\8th opening on the drain. same as my t25 since it never gave me problems.iths the same size as the drain hole coming out of the turbo.

MadeInThe80s · Post by **MadeInThe80s** » Mon Oct 19, 2009 1:42 pm

Man I want my car back

Clocked the turbo the right direction today and got looking at the oil feed line they sent with the kit and it doesnt fit the turbo correctly. The return line flange doesnt bolt up either. Ive emailed em about it and am awaiting an answer. Oil line goes on top correct? Only reason I ask is because the feed kit seems to want to attach to the flange for the drain side. I'll take some pics.

Though they did say the kit didnt include banjo water fittings yet the turbo came with them installed on it so who knows!

Maybe Ive got something backwards.

Top hole is threaded

Bottom drain flange area not threaded

Im assuming this is the return flange??

mooreofit · Post by **mooreofit** » Mon Oct 19, 2009 3:22 pm

my buddy chris bought one of those chees fee\return line kits and it didnt bolt up either. you dont want to use that!

also you dont want a restricted oil feed in the standard t25.

as far as the right fittings try a reputable company like atpturbo thats where we got the right ones.

MadeInThe80s · Post by **MadeInThe80s** » Mon Oct 19, 2009 4:05 pm

I figured Id end up getting new feed/return lines for it. At least I can easily get water lines for it now. And the wastegate line needs to be extended due to rotating of the housing. I noticed in their picture they show it not even hooked up in their "mock" up on the car. Overall I still think its a decent kit for the money. Now their welding skills on the downpipe are laughable. How hard is it to line a flange up to a pipe?

So which side is the feed and which is the return?

mooreofit · Post by **mooreofit** » Mon Oct 19, 2009 5:21 pm

the return is the one you have that flange bolted too.

also make sure that the oil in and out are perfectly strait up and down. if it s cocked at all it will retain oil and you will have issues.