twin pipe question
- Thread starter MD-Dmax
- Start date
Most twins are 3" hot pipe and 3.5" cold pipe. As far as angles it would depend on how you lay them out, but damn near everything you would need can come from mandrel-bends.com, racepartssolutions.com, or extremepsi.com. Extreme PSI is more geared towards imports, but just outside of Philly so you could always drive there to pick stuff up (pretty sure you're in maryland) They also have most everything you should need.
What size turbos are you planning on useing?
What size turbos are you planning on useing?
Sounds like the same setup I'm planning on running.
From the research I've done , 3" SS hot pipe, 3.5" MS cold pipes, T6 1.32 A/R turbo. Not sure yet how I plan on laying them out so I can't really help you on what angles you are going to need.
From the research I've done , 3" SS hot pipe, 3.5" MS cold pipes, T6 1.32 A/R turbo. Not sure yet how I plan on laying them out so I can't really help you on what angles you are going to need.
I did the opposite...3.5" hot pipe and 3" cold pipe.
1.32 A/R housing is the same though.
Basically all I did was get a bunch of 45* bends and one 180*. All of it was from racepartsolutions.com. Good prices and nothing really took much longer than a couple days to get to me.
1.32 A/R housing is the same though.
Basically all I did was get a bunch of 45* bends and one 180*. All of it was from racepartsolutions.com. Good prices and nothing really took much longer than a couple days to get to me.
like 2 or 3 exhaust. 2 cold pipe. and 2 for the charge pipe (Intercooler to intake manifold). I forgot to mention I used 3" for the charge pipe as well.
O and then the 5" downpipe i used like 3 90* bends and a a foot of striaght. That seemed to work out really well for me
the main difference between building twins on an LB7 vs. LLY vs. LBZ is the pipe that goes from the intercooler into the engine.
3" is fine for the hot pipe. 3" or 3.5" is fine for the cold pipe. Intercooler pipe, 2.5" or 3" is fine IMO.
You dont need SS for the hot pipe. "people say" ohhh its gonna crack you cant do that. But MPI and everyone else uses mild steel or aluminized steel for the twin hot pipes and whens the last time you have heard of any twins cracking hot pipes??
ben
3" is fine for the hot pipe. 3" or 3.5" is fine for the cold pipe. Intercooler pipe, 2.5" or 3" is fine IMO.
You dont need SS for the hot pipe. "people say" ohhh its gonna crack you cant do that. But MPI and everyone else uses mild steel or aluminized steel for the twin hot pipes and whens the last time you have heard of any twins cracking hot pipes??
ben
IMO, no, 3" should still be fine...but its up to you. It also depends what size v-band outlet the S366 is.
mandrel-bends.com has everything you need. Get the tightest 180* bend they have and go from there. The rest of the bends/angles depends on your own design and where you mount the big turbo...
the 3.5" 180* bend might have too big a radius to fit easily between the S366 and the firewall/cowl. The tightest 180* they have in 3.5" dia has a 5" CL radius. The 3" 180* bend they have is a 4" CLR.
Did you look at my twins build thread? There are quite a few pictures in there that should help out.
Ben
mandrel-bends.com has everything you need. Get the tightest 180* bend they have and go from there. The rest of the bends/angles depends on your own design and where you mount the big turbo...
the 3.5" 180* bend might have too big a radius to fit easily between the S366 and the firewall/cowl. The tightest 180* they have in 3.5" dia has a 5" CL radius. The 3" 180* bend they have is a 4" CLR.
Did you look at my twins build thread? There are quite a few pictures in there that should help out.
Ben
i am going to call you next week ive been in touch with donny but im on vacation till sat so my funds are tight till next week. i know i need a running motor first. i just figured i start a thread to figure out what i need so when the time comes ill know what to get. when are you coming back into town?
no i have not looked at them yet but i will. thanks for all the info it helps
Lol I was on the phone with Steven last week and he said your motor was being built called Donney he said no talked to him bit it's still here so figured he miss bearded you lol. In town I can be at your house in 8 mins lol
Also it's to hot here in md so I take it we need to order a S366 and a S480 all the piping is local pickup