rockmike

Hey guys im looking at boosting my samurai.Im runnin an 83 ford 2300 4 banger in it.Currently just running the lpg through an Impco 125 mixer and a Cobra model J convertor.

I really dont know much about the turbo thing,Ive been beating my head trying to figure out how to get inrichment with the boost with out getting involved with computers,everything is mechanical right now and i want to keep it that way.(its a mountain goat,I get way back deep into the woods with it,I need to be able to fix problems with simple tools)

A light bulb came on over my thick skull the other day...DRAW through! right Just mount the butterfly portion (throttle plate)of my mixer on the intake,put the rest of the mixer on the intake side of the turbo,then as the boost came up it would suck harder and get more fuel as boost came up? I would need the BOV to recirculate the boosted propane vapor back in front of the mixer? or into the mixers intake?(air filter housing)

Im lookin at low boost,figure 6 -8 lbs would give me plenty of extra power.

My concerns,do I need to look at specicfic turbos to do this? meaning proper seals in the turbo to be runnin the propane into it?

I was thinking of one of those IHI turbos like off a Impreza?? I think I want a small turbo,with ball bearing and water cooled,since im sure this draw through set up will not allow the use of an intercooler(I have no room for one anyway)

Sure hope y'all dont mind helpin a newb out with this adventure with some good advice and shared Knowledge.

Thanks! Mike.

Mrturbojoe

it seems that you have it under control and no specific turbo those ihi are pricey and harder to come by these days you can get a wrx non sti turbo tdo4 or tdo5 for cheaper thats not ballbearing but still water cooled correct me if im wrong but i think those 2300 are the same 2.3L motor out of the turbo svo mustangs ? if so they put garrett t3 turbos on those just a side note

rockmike

Yes simliar motors,all though my motor has no means of an oil return or feed for the turbos oiling.Ill need to research this and figure out the best way to get oil and return it to the 2.3l block.


Thats what im finding now,seems like a few years ago I was contimplating doing this and the impreza IHI was priced ok and out there...not so much now hmmm.I was doing a bunch more reading im thinking maybe t3 super 60 might be a good turbo??

I would appreciate any input on the turbo selection.The rig is a rock crawler that sees lots of desert thrashing also.My biggest thing is I dont want lag!! I cant be crawlin along and all the sudden bam! have some boost! ya know?

So does the t3 super 60 have an internal waste gate? can you get one with?if so cant a guy rig that up in such a way to only let it produce say 6 lbs,therefore not needing the POV so no worries about exhausting boosted air filled with propane?

My ignorance is showing...lol

Really appreciate your responce.

Discussion:

busa4

i think this is a disaster waiting to happen. boost and carbs do not go well. add lpg and a draw through design to it and i cant imagine what would happen if something goes wrong.

i would at least build a blow through design and lose the lpg idea that way you can add a bov (yes its required even on low boost if you want your turbo to survive).

a t3 super 60 will work well. it should spool at ~2000-2500 rpm.

rockmike

The rig is all built and the fuel system is LPG so it stays LPG. Ive run this same motor in my other rig and in the 6 years its been in service it has never back fired draw through is the only way I can see to get enrichment as boost comes on.

Do these t3 super 60 turbos have the correct seals to run draw through??

So whats going to happen if I back fire blow a boost tube coupler??

So If a guy goes back to my origional thought s on this,I would install a POV now do I rerout this vapor just in front of the turbo or should it go back in front of the mixer(carb)??

Apprecaite the input and advice!

discussion:

Mrturbojoe

i cant give you advice on the pov return but for six pounds t3 super 60 really ? those are suppose to push 60lbs/min thats why they call it super 60 i dont think youll be in it efficiency range probably surge , i recommend a t25 or gt25 you can get a t25 off some second generation turbo eclipses , BOV are safty factors so get one also , for oiling they make sandwhich plates between the oil filter and block were you can tap oil from , or what i did i " T " into my oil pressure sensor to my turbo , as for the oil return just weld in a threaded bung 1 inch or bigger but keep it away from the oil sump , if you put it to close the reverb of the pump sucking creates a turbulance and doesnt allow the oil to freely return to the pan and backs up in drain line , causing the oil to force out the turbo seals

rockmike

Well 6 lbs is just a number I through out there,just so its understood its a low boost application.My ignorance of the turbo's is obvious,thats why Im here trying to soak up some info and lookin for good advice from the non ignorant lol

My wanting a fast spool,little to no lag made me orginally think the t25 might be the best bet,then I have some guy tell me thats way to small and it wouldnt allow full power @WOT I dont want to choke the engine but I think fast spool is paramount...its always a compromise isnt it.Im a fabricator,not a tuner...attempting to learn though.

Appreciate your post! im biggining to get a clue lol

john0270

Your current setup now is probably running out of power in the 5500 rpm range anyway right? And you want all the low end grunt and torque you can get in a rig like this? Go with a small turbo, wouldn't a 14g, or small t3, t25, t28(.42 ar compressor) work well for this guy??

found this with a quick google search, a few hours of reading and searching and you should be well on your way. http://www.pirate4x4.com/forum/archi.../t-534052.html

If you get a hold of a factory ford turbo engine:

rockmike

To awsome! thanks for the post!

yes sir that about where typically have it tuned,mostly bottom end power.Unless I go to a mud bog then I retard the cam timing a bit and crank up my mixer and I can build power all the way up to 7500 rpms kinda doggy on the bottom but when I hit about 3500 she lights the wick! and pulls hard

I dont mud race much anymore,I want the turbo for that extra mid range power to be able to hold 3rd gear on them long steep climbs...I run out of power now and have to down shift ,then lose all my momentum and im done! I think boosting it will push me over that hump and have enough power to pull the big climbs in third gear

rockmike

So are these a POS turbo that I can plan on replacing soon after install?? or decent stuff?
http://cgi.ebay.com/ebaymotors/New-D...item3f0441846f

instincts tell me this could be a better quality turbo?? whatcha guys think??
http://cgi.ebay.com/ebaymotors/Nissa...item2eb802480c

Again instincts tell me this is the turbo,but expensive.But much higher quality than the others I posted??
http://cgi.ebay.com/ebaymotors/Rebui...item3cb866ce05
Thanks guys,appreciate the help.