35's, armor and camping gear have made my 80 (The ODB) too slow, especially at elevation. I'd go for a supercharger for simplicity's sake but it seems like turbo is my best option at this point. I’ve been reading through posts here and plotting a turbo build for my rig. Basically I’m following @scottryana’s recipe for a mild turbo to mimic the oem supercharger, with some of my own tweaks. My 96 has 209k miles and the HG was done at 150k, no known engine issues.
These threads are my main inspiration: So are there any TRD Superchargers left?
TurboClunker (a.k.a. cheap-ass slaps a turbo on his LX)
I’m putting this plan up for dissection from you guys before I purchase parts. I’m planning on using a Treadstone manifold, borg warner s300sx twin scroll, Tial 38mm wg, Tial recirculating bov, Treadstone oil supply/drain. AEM wideband O2 gauge, turbo oil pressure gauge, egt gauge(eh why not?), and a small a/a intercooler in the ps side of the grill. Plus a whole mess of stainless tube, silicon bits and clamps to hold it all together.
I plan to use the stock airbox with the maf attached as stock, this will connect to the compressor intake of the turbo. I will use a recirculating bov to make sure air metered by the maf is not vented to the atmosphere. Then I plan to route the charge pipe under the ps headlight to a small a/a intercooler in the ps side grill, then back under the headlight again (cutting a large oval in the fender support sheet metal). I might need to relocate the radiator overflow tank. Charge pipe will have a recirculating bov on it’s way to the intake. I like the idea of leaving the maf in the stock location on the airbox so it will not be subjected to hot and possibly oily post turbo air.
Here are some more specific questions:
These threads are my main inspiration: So are there any TRD Superchargers left?
TurboClunker (a.k.a. cheap-ass slaps a turbo on his LX)
- Use stock airbox (it’s snorked)
- No ecu, fueling, timing mods (mimicking oem supercharger)
- Ability to revert to stock with no welding
- Stock exhaust from front 02 sensor rearward
I’m putting this plan up for dissection from you guys before I purchase parts. I’m planning on using a Treadstone manifold, borg warner s300sx twin scroll, Tial 38mm wg, Tial recirculating bov, Treadstone oil supply/drain. AEM wideband O2 gauge, turbo oil pressure gauge, egt gauge(eh why not?), and a small a/a intercooler in the ps side of the grill. Plus a whole mess of stainless tube, silicon bits and clamps to hold it all together.
I plan to use the stock airbox with the maf attached as stock, this will connect to the compressor intake of the turbo. I will use a recirculating bov to make sure air metered by the maf is not vented to the atmosphere. Then I plan to route the charge pipe under the ps headlight to a small a/a intercooler in the ps side grill, then back under the headlight again (cutting a large oval in the fender support sheet metal). I might need to relocate the radiator overflow tank. Charge pipe will have a recirculating bov on it’s way to the intake. I like the idea of leaving the maf in the stock location on the airbox so it will not be subjected to hot and possibly oily post turbo air.
Here are some more specific questions:
- Is there any benefit to a twin scroll turbo on a single scroll manifold like the Treadstone? I figure probably not, but if there is no downside I would like to go twin scroll so I could possibly ditch the Treadstone for a twin scroll J/Y pipe configuration in the future.
- For those who have used the Treadstone, is there enough meat to grind out the egr port?
- Does a vacuum controlled system such as the egr even function on a turbo rig? I would like to keep the egr functional but if it won’t be doing anything, I might as well not carve out a port (if I even can).
- I plan to limit boost to somewhere under 8 psi, would it make sense to use a boost controller to add more precision to the boost response curve? More specifically, use a low psi (4ish?) wg spring, then manipulate boost via a boost controller for more accurate pressure control. I’m new to turbos and I realize this might be fundamentally impossible due to vacuum/ spring force, just thought I’d ask. Probably overkill too but this is mud!