Page 1 of 11
Putting a turbo on the ol' 1915
Posted: Thu Jan 02, 2020 5:17 pm
by Therealkoop
Been lurking this forum for a while, started putting together a turbo setup. Not entirely cheaping out, but not spending a ton either. The engine is a fresh 1915 that wasn't built with a turbo in mind (110 cam, 8.5:1, cheap components), but I dont drive it too much (less than 500 miles a year) and Im not going for absolute amazing performance. Purchased a small ebay turbo and plan on just running the internal wastegate at 5-7 lbs.
Installed a new "built" single side cover trans with a stage 1 pressure plate and daiken disc.
Purchased a cheap exhaust and plan to make a simple up pipe off the collector.
Limited a 009 distributor with a grub screw, need to fine tune it. Might upgrade in the future to a CB black box or similar.
Installed a holley blue pump and a boost referenced regulator, needed a tank that could facilitate a return so I just bought a new one.
Made a few 30mm mod rings, I did install turbo emulsion tubes so I am not sure if I will need them, but it gave me something to do on a slow day.
Still need to finish the up pipe, charge pipe and downpipe (waiting for bends to come in the mail), install a wideband, and make some feed/return lines.
55575904_10161604709440201_3886991195821309952_o.jpg
80453888_10162807482585201_4958648139616616448_o.jpg
81134381_10162807482850201_2524163807551422464_o.jpg
81506445_10162807482140201_8585020303304818688_o.jpg
Re: Putting a turbo on the ol' 1915
Posted: Thu Jan 02, 2020 6:37 pm
by Schweg
Welcome to the dark side.
Re: Putting a turbo on the ol' 1915
Posted: Thu Jan 02, 2020 7:39 pm
by buguy
I like it!
Re: Putting a turbo on the ol' 1915
Posted: Fri Jan 03, 2020 3:54 am
by madmike
Luv the off-road buggy! " Warning" your gonna need better back tires to take advantage of the new powerband

Re: Putting a turbo on the ol' 1915
Posted: Sun Jan 05, 2020 2:26 pm
by Therealkoop
Thanks guys.
Tacked together some pipes. Need another 90* bend to finish up the charge pipe.
Tested the wastegate, doesnt even think of opening until at least 10psi even when disconnected from the arm, ordered a replacement 5psi wastegate. I can always turn it up with a boost controller if I want.
Exhaust flange didnt fit even though I bought the ugly one with a bunch of holes in it to mate to different turbos. I found a flange for a TB25 turbo, looks like it will fit. Turbo restrictor didnt fit either, apparantly this turbo isnt an m11x1 thread inlet.
81292993_10162832520915201_7621867040998948864_o.jpg
Re: Putting a turbo on the ol' 1915
Posted: Mon Jan 06, 2020 4:36 am
by madmike
Your in Michigan

where? I'm up north ,, and I know lots of 'trail's'
Do keep the 10 lbs. gate ur gonna need it someday

Re: Putting a turbo on the ol' 1915
Posted: Mon Jan 06, 2020 4:07 pm
by panel
Nice fitment of all your intake and exhaust plumbing!
Re: Putting a turbo on the ol' 1915
Posted: Mon Jan 06, 2020 5:35 pm
by Ol'fogasaurus
Neatness does count! Good job sir!
Lee
Re: Putting a turbo on the ol' 1915
Posted: Tue Jan 07, 2020 3:58 pm
by Therealkoop
I'm in the thumb, mostly just ice cream cruise or beat on it around mine or a friends property. When people see it and want a ride I have a nice little hill to get airborne off of which makes people freak out haha.
I figure I can always turn up the 5lb gate with a manual controller, this thing has the cheap scat internals so im not sure how happy its gonna be, but Im going to find out. Its just money, I can make more. All the fabrication stuff/setp is what takes the most time anyway!
Re: Putting a turbo on the ol' 1915
Posted: Tue Jan 07, 2020 4:43 pm
by buguy
I think you would be surprised. I put 30 psi at my stock engine for quite a while. When I tore it down only thing I found wrong was whoever rebuilt it who knows when didn't put a thrust bearing in the cam. Even now only thing not stock is my cam and lifters. Still putting 25+ psi to it and up to 6000 rpm so far. I'm on E85 though, but still shows what they can take.
Im with you though. It's only green paper!
Re: Putting a turbo on the ol' 1915
Posted: Tue Jan 07, 2020 4:55 pm
by Therealkoop
Thanks for the experience, seems like I see a lot of doomsayers on other forums. Im not sure how the stockers are built, but I have put a lot of power through factory GM bottom ends with hyper eutectic pistons and while more brittle, they could hold power as long as you didnt operate under heavy knock conditions.
Re: Putting a turbo on the ol' 1915
Posted: Tue Jan 07, 2020 6:20 pm
by buguy
I also have efi and an interooler. Keeping the tune spot on and intake temps down goes a long way for engine life. An intercooler would do a lot of good for you too. Something you may want to add down the road. You have the perfect machine for it.
Re: Putting a turbo on the ol' 1915
Posted: Wed Jan 08, 2020 4:28 am
by madmike
I hear ya on giving 'Ride's' My road is dirt and quite Hilly, gave a guy a ride going up one of the small hills and it boosted, we came off the ground, He had a "Perma grin" the rest of the day

Re: Putting a turbo on the ol' 1915
Posted: Sat Jan 11, 2020 6:05 pm
by Therealkoop
Finished feed/return lines. Hopefully no issues with this return, I do have a 1.5mm IIRC restriction in the feed side, and the return is -8an. Turbo is bushing style.
Downpipe and flange are GTG. Took a long time to find the appropriate flange to mate with the turbo, and only took minimal mods to make fit.
5lb wastegate tested and installed, Ill put a manual boost controller on it at some point.
Any suggestions for a BOV? I wasnt going to use one at all but im considering it. I kinda copied things from CB performance's pictures but it would appear they do not utilize a BOV.
Once I get a 90* elbow I should be able to finish my charge pipe. Aside from TIG welding all the pieces together and tuning, I think I will be done at that point.
82248218_10162860918160201_265341026552512512_o.jpg
82181619_10162860918175201_5757401856401735680_o.jpg
Re: Putting a turbo on the ol' 1915
Posted: Sat Jan 11, 2020 6:25 pm
by Schweg
Type-S Style Universal 40mm Turbo Blow Off Valve+2.5 inches Flange Pipe - Black
That’s what I have been using without an issue. That or look on Facebook market there are a few on there.