Twin build

quadracer37

quadracer37

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Mar 31, 2009
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thats the same turbo setup i plan on doing to mine this winter! the 1.32 and T6 should be a good setup for daily driver?
are you going to put some heat wrap on that hotpipe?? also, were did you run your oil return line off the the turbo, just into the oil pan? i was thinking about running it to the oil fill tube tube.. easier to get to and drill/tap, but it might be to high? probably dont want the return line to run up at all... nice job on the tubing fab!
 
SDP

SDP

AKA Dmax15
Dec 20, 2008
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Port Angeles, WA
No wastegate.

Yeah I'm planning on wrapping the tubing once I get it all together before I get it running here shortly. Return line will go to the pan, next to the starter, not sure if the fill tube would be to high or not though. The feed line will come from the hole in the block next to the mount.
 
mytmousemalibu

mytmousemalibu

Cut your ride, sissy!
Apr 12, 2008
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IMO, i wouldnt run the line to the fill tube. It might be slightly lower but the oil flows too laterally. You want it to be more vertical, because if oil backs up and restricts the drain off it could blow out the seals. If it blew out the compressor seal badly, you could have a runaway on your hands;)
 
quadracer37

quadracer37

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indeed thats what i was thinking oil back up if its not running down enough... but how much of a pain is it to drill and tap the oil pan by the starter?
 
SDP

SDP

AKA Dmax15
Dec 20, 2008
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Port Angeles, WA
quadracer37 said:
indeed thats what i was thinking oil back up if its not running down enough... but how much of a pain is it to drill and tap the oil pan by the starter?
Click to expand...

Just need to get in there with a right angle 1/2" drill, I only have 3/8" right angle air drill so I'm going to have to narrow my drill bit down some to fit it I guess. Doesn't look like it'll be too bad once the starter is out of the way, I could almost fit my small makita drill back there but the bit was a few inches too long.
 
quadracer37

quadracer37

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gotcha. are you just gonna change the oil right afterwards and use some grease to keep the shavings out of the pan..? it is aluminum isnt it...
 
M

mainer

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Nov 11, 2008
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0 shavings go into the pan.... the oil level is higher then where you are drilling as soon as you break through oil starts coming out and pushing all shavings out.

the turbo's are very loud, sounds like a jet

s475 is an ideal daily driver turbo with the stocker as small charger, spool is instant, my truck makes 45 psi and only lets out a puff of smoke and then its perfectly clean.... this is at 500whp with only 1300* max temps


guys t4 and t6 are just the flange sizes it has no effect on the performance of the turbo if the a/r's and the wheels are the same for both flange sizes.

typically you use a t4 flange when using the s400 series chargers as a single because they only offer the tighter a/r housings in a t4 flange.


any chance i can see more pictures of how you made your hotpipe with the vband off the stock charger? looks clean and easy to take on/ off compared to the one i made that has to be twisted in there just the right way.
 
SDP

SDP

AKA Dmax15
Dec 20, 2008
261
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Port Angeles, WA
mainer said:
0 shavings go into the pan.... the oil level is higher then where you are drilling as soon as you break through oil starts coming out and pushing all shavings out.

the turbo's are very loud, sounds like a jet

s475 is an ideal daily driver turbo with the stocker as small charger, spool is instant, my truck makes 45 psi and only lets out a puff of smoke and then its perfectly clean.... this is at 500whp with only 1300* max temps


guys t4 and t6 are just the flange sizes it has no effect on the performance of the turbo if the a/r's and the wheels are the same for both flange sizes.

typically you use a t4 flange when using the s400 series chargers as a single because they only offer the tighter a/r housings in a t4 flange.


any chance i can see more pictures of how you made your hotpipe with the vband off the stock charger? looks clean and easy to take on/ off compared to the one i made that has to be twisted in there just the right way.
Click to expand...

Can't wait to hear what it sounds like.

I was looking at making the hotpipe similar to yours but it would have been a pita to get in and out of there, fits back there much easier this way and is cleaner looking IMO. I'll work on getting some more pictures up here in a bit.
 
SDP

SDP

AKA Dmax15
Dec 20, 2008
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Port Angeles, WA
Some of these are pretty dark but its all I have. I'm going to make a new piece off the back of the IHI there eventually, it's the worst looking part of the whole setup I think but it was easiest at the time.

1hotpipe1.jpg

1hotpipe2.jpg

1hotpipe3.jpg
 
Last edited:
SDP

SDP

AKA Dmax15
Dec 20, 2008
261
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Port Angeles, WA
They are done, have been driving some this morning. Have only used the mileage/tow tune so far and on a run from 0-80 uphill the EGT's never got above 950. Boost on the mileage tune sits at 40psi while the drive pressure is right around 42psi, I don't think it can get much better than that. Spoolup is slightly quicker than stock but l still have the PPE boost valve on, I'll have to take it off and see if it spools quicker which I'm thinking it will.

Still need to finish the exhaust as its just dumping under the passenger side till I finish it up this evening. Also planning on plumbing in the other boost gauge between the chargers.

1finishedtwins1.jpg
 
dmaxvaz

dmaxvaz

wannabe puller
Nov 22, 2006
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dmax15 said:
they are done, have been driving some this morning. Have only used the mileage/tow tune so far and on a run from 0-80 uphill the egt's never got above 950. Boost on the mileage tune sits at 40psi while the drive pressure is right around 42psi, i don't think it can get much better than that. Spoolup is slightly quicker than stock but l still have the ppe boost valve on, i'll have to take it off and see if it spools quicker which i'm thinking it will.

Still need to finish the exhaust as its just dumping under the passenger side till i finish it up this evening. Also planning on plumbing in the other boost gauge between the chargers.

1finishedtwins1.jpg
Click to expand...
leave the boost valve in
 
SDP

SDP

AKA Dmax15
Dec 20, 2008
261
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Port Angeles, WA
dmaxvaz said:
leave the boost valve in
Click to expand...

What's the reasoning? I was thinking about leaving it in since it runs so well how it is but then I was thinking it only takes a second to swap it out and see what it does. With it out wouldn't it let the exhaust bypass the smaller turbo quicker to spool the larger one?
 
bonescarolfi

bonescarolfi

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Sep 3, 2008
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Dmax15 said:
They are done, have been driving some this morning. Have only used the mileage/tow tune so far and on a run from 0-80 uphill the EGT's never got above 950. Boost on the mileage tune sits at 40psi while the drive pressure is right around 42psi, I don't think it can get much better than that. Spoolup is slightly quicker than stock but l still have the PPE boost valve on, I'll have to take it off and see if it spools quicker which I'm thinking it will.

Still need to finish the exhaust as its just dumping under the passenger side till I finish it up this evening. Also planning on plumbing in the other boost gauge between the chargers.

1finishedtwins1.jpg
Click to expand...

Looks good. :thumb:
 
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