So what kind of power is this thing going to make when done? guess?
Builds Moonshine - A Build Thread (9 Viewers)
- Thread starter GLTHFJ60
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- Thread starter
- #4,102
Goal is 400hp I guess. 300-350ish at the wheels? Roughly double my current (estimated) power.
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Are you doing injectors too? What other upgrades besides the turbo components?
- Thread starter
- #4,104
The engine has a bunch of stuff. Will do injectors down the road.
To clarify, the goal is 400hp eventually, but not right out the gate.
- Thread starter
- #4,105
Made one manifold cap on the mill with 1/8"npt ports for egt and drive pressure gauge ports. Second cap made out of 1/4" plate. Prepped the manifold, preheated it, welded the two caps on, the wrapped it and let it cool slowly. Finally I cleaned it up with some grinder action and ported the round ports to fit the rectangular ports of the engine.
- Thread starter
- #4,106
Spent the next while welding the intake vband onto the primary turbo compressor housing. Welding cast aluminum sucks so bad.
Also finish welded the hot pipe and threw some temp paint on it to prevent rust.
I fought the compressor housing snap rings for a while but won (tool now on order) and put everything back on to start imaging the secondary to primary charge pipe. Gonna be tight, but it will fit.
Also finish welded the hot pipe and threw some temp paint on it to prevent rust.
I fought the compressor housing snap rings for a while but won (tool now on order) and put everything back on to start imaging the secondary to primary charge pipe. Gonna be tight, but it will fit.
- Thread starter
- #4,108
67mmx76mm
HE351 Exhaust Housing Upgrade - Turbo Lab
HE341 HE351 Exhaust Housing Upgrade Details: HE351 HE351CW HE341 Turbine Housing Upgrade 67mm x 76mm HX40 Turbine Wheel + Turbine Housing Reduce EGTs Lower Drive Pressure Increase Spool Up (because of 76mm exducer of turbine) Brand New Turbine Housing Direct Replacement of HE341 HE351 HE351...
turbolabofamerica.com
- Thread starter
- #4,110
Yup. Bit of a gamble, but I think it will work with this larger turbine wheel.
Pretty sure you are going to build boost very quickly and be in boost most of your driving. Maybe this is better with a manual so it will be interesting to see how it settles out. Having a wastegate on both turbos should be an advantage in being able to tune both turbos. I'm curious to see how the egts settle out too. With that quick of boost building I'm going to have to suggest looking into head studs now rather than later. Unless the plan is to try it now, pop the gasket, get the head o-ringed and then not have to worry about higher boost numbers. 
In starting out your tuning I'd suggest opening those wastegates early and then tighten them up a little at a time. You'll need to run the formula's to see how this combo is sharing the load. I'm thinking that your primary will want to try and do quite a bit of work with that small of an exhaust housing and boost numbers will be high, but you need to try it so we know. I think I'm opened to 16-17cm on my primary turbo right now. It's been a while since I've done any tuning/tinkering on my fueling. I really need to work on my tranny map, I just haven't driven it lately to spend time dialing it in.
In starting out your tuning I'd suggest opening those wastegates early and then tighten them up a little at a time. You'll need to run the formula's to see how this combo is sharing the load. I'm thinking that your primary will want to try and do quite a bit of work with that small of an exhaust housing and boost numbers will be high, but you need to try it so we know. I think I'm opened to 16-17cm on my primary turbo right now. It's been a while since I've done any tuning/tinkering on my fueling. I really need to work on my tranny map, I just haven't driven it lately to spend time dialing it in.
- Thread starter
- #4,112
I've been thinking about studs more and more as well, lol.
To get the lingo straight, the primary turbo is the one on the exhaust manifold (also called high pressure turbo) and the secondary is the one fed exhaust by the primary (also called atmospheric). Right? That's what I've read.
To get the lingo straight, the primary turbo is the one on the exhaust manifold (also called high pressure turbo) and the secondary is the one fed exhaust by the primary (also called atmospheric). Right? That's what I've read.
Yeah it get's jumbled and I've seen it described both ways unfortunately, I think its what flow one is looking at be it exhaust or air intake. While not as cool sounding I should have said big turbo and small turbo. So to edit what I was thinking, I think the big turbo will want to do more of the work than the little turbo.
- Thread starter
- #4,114
I'm tracking you, lol.
My thinking is that the he351 with this turbine wheel/housing performs well on 6bts, so it should serve well as a secondary turbo in a compound set on a 4bt. Same thinking as with the hx35. This should spool faster, but that's the goal imo.
We will see!!
Aluminum tig has been kicking my ass the past few days. Have been trying to build the intermediate pipe from big turbo to small turbo. I'm on the third iteration now and I think I've got a winner, just need to finish execution, and get better at thin wall aluminum tig, lol.
Another project update in a few days I hope.
My thinking is that the he351 with this turbine wheel/housing performs well on 6bts, so it should serve well as a secondary turbo in a compound set on a 4bt. Same thinking as with the hx35. This should spool faster, but that's the goal imo.
We will see!!
Aluminum tig has been kicking my ass the past few days. Have been trying to build the intermediate pipe from big turbo to small turbo. I'm on the third iteration now and I think I've got a winner, just need to finish execution, and get better at thin wall aluminum tig, lol.
Another project update in a few days I hope.
- Thread starter
- #4,116
After getting the manifold and hot pipe welded, I wanted to fabricate the intermediate pipe between big turbo outlet and small turbo inlet. It's a tricky spot because the alternator is right in the way, and for some reason I decided I wanted to do it out of aluminum.
Long story short I've never welded thin wall aluminum tubing before, and my tig welder is apparently not suited for thin wall AC. I fought with my welder for a while, then ultimately gave up and borrowed a friend's welder (thank you @S4Cruiser !). With some practice I was able to knock together a few iterations of the intermediate pipe, and I think I've got a winner now.
Attempt #1 ended up being too short.
Attempt #2 wasn't sharp enough of a bend, and deformed too much (due to the welds) when bent to clear the alternator.
Attempt #3 is my current favorite, and is still in progress. I'm liking it, but that patch pictured didn't pan out, so I've got to make a new one.
Currently waiting on a new vband clamp, as the one in the picture galled + seized, then had to be cut off.
Talk about a ****in debacle. I am getting much better at AL tig though,
Long story short I've never welded thin wall aluminum tubing before, and my tig welder is apparently not suited for thin wall AC. I fought with my welder for a while, then ultimately gave up and borrowed a friend's welder (thank you @S4Cruiser !). With some practice I was able to knock together a few iterations of the intermediate pipe, and I think I've got a winner now.
Attempt #1 ended up being too short.
Attempt #2 wasn't sharp enough of a bend, and deformed too much (due to the welds) when bent to clear the alternator.
Attempt #3 is my current favorite, and is still in progress. I'm liking it, but that patch pictured didn't pan out, so I've got to make a new one.
Currently waiting on a new vband clamp, as the one in the picture galled + seized, then had to be cut off.
Talk about a ****in debacle. I am getting much better at AL tig though,
- Thread starter
- #4,117
Last night I wanted to get something done before the new vband for the inlet showed up.
I bought a he351 generic stainless outlet on Amazon, then a 45*/180* section of 3" 304 stainless and 3" stainless vband clamp set from mandrel-bends.com. Using those parts I was able to repair the middle section of the existing exhaust, and fabricate a new downpipe. It went together fairly well. I need to add one more exhaust hange, and finish weld the downpipe, but I'm pretty stoked.
By the way, welding stainless is way, way, way easier than welding aluminum.
Finally, the tape pictured is high temp masking tape, aka powdercoat tape. Its awesome for holding tubing sections in alignment while you tack it together.
I bought a he351 generic stainless outlet on Amazon, then a 45*/180* section of 3" 304 stainless and 3" stainless vband clamp set from mandrel-bends.com. Using those parts I was able to repair the middle section of the existing exhaust, and fabricate a new downpipe. It went together fairly well. I need to add one more exhaust hange, and finish weld the downpipe, but I'm pretty stoked.
By the way, welding stainless is way, way, way easier than welding aluminum.
Finally, the tape pictured is high temp masking tape, aka powdercoat tape. Its awesome for holding tubing sections in alignment while you tack it together.
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What size filler you using for that thin AL stuff.
Learning on that 16/18g tubing is trial by fire.
Learning on that 16/18g tubing is trial by fire.
- Thread starter
- #4,120
3/32". I've done a bit of AL tig before, but this is my first time on thin tubing.
Thicker stuff and training on flat plates is easy, but the positioning and fit up for this tube is a real bear.
