Turbo for carbed engine
 

Newbie question.
Ive hunted arround the net and manged to find enoughf pics to understand how a fuel injected car would be turboed. i.e. plumbing wise i.e. from the turbo to the air box or the rail. But how do you plumb the forced air for a carbed car. How do you jet it.
App is a 8 Valve carbed 4 cylinder swift engine.
There is a tube feeding the air filter from outside the engine bay. Should my compresed air join this tube. If it does then do I seal off the other entry. Whats to prevent my forced air being forced out what is the intake for the air filter.
Any pics of a crabed engine with a turbo
thanks

Re:Turbo for carbed engine
 

Also are all T25 Turbos Liquid cooled
Or are some water cooled and others onlly oil cooled.

Re:Turbo for carbed engine
 

i was also hoping to earn from this, but since you said read, and he prorobly did and thus said for injected cars, alas he has a carbd car. i might get myself a carbed car aswell, and i was hoping there was an answer to that aswell, because dual weber sidedrafts on a damn 2nd gen accord just wont cut it.

Re:Turbo for carbed engine
 

Is it just me.
Am I on the wrong forum.
But for every technical post there there seems to be 20 that servers no purpose.

Im a technical advisor on VSAT (Satalite) networks. And as a hobby run and moderate a number of technical forums for Two Strokes. rddreams.com and macdizzy.com
Im married with two girls aged 8 and 3.
Hows that for a totally pointless off topic and total waste of a responce. 8)

Ive spent the last 3 weeks reading every single Newbie post. And cant find answers to any of my questions.
Ps: The Carb issue is relavent cause my two stroke motors dont come with fuel rails. And I know a ---- load of two strokes have Turbos installed. If you dont know an answer. Calling me Gay dont cut it.

Re:Turbo for carbed engine
 

turbo charging a carb engine is a real pain in the ass.

1. you practically have to guess ( experince eliminats guessing ) the carb settings ( jetting ) along with the boost.

then you have to get your carbs pressurized
( its relitive in cost. from $25-150 a carb )
then your manifold. ( fabrication ) and your boost limitations i think the carb limitations are like 3-15psi depending on the carbs.

what type of turbo carb system.
carb before the turbo or after.

its just easier to build Efi from spare parts and stuff...

Re:Turbo for carbed engine
 

yes, you are in the wrong section, maybe there are so many threads that don't serve a purpose is because you're in the "general discussion" section as opposed to the "forced induction" section

Re:Turbo for carbed engine
 

Thanks
Easy dont intrest me.
Turbo before carb.
Single carb.
Plan on runing 8-10 PSI.

For the RD the plan is build a 1x2 manifold and run a 40 mm lectron. Extra fuel will be controled by a selounid based power jet.

For the car Im planing something similar an extra circuit / power jet.
I build Digital Programeable CDIs with dual stage revlimiters and Digital EGTs for two strokes to the electronics is not a porblem.

Manifolds are not a problem. Have acess to a complete CNC machine shop and Tig welder.

Already started word on an air/water intercooler.

The really hard part is sourcing the basic Turbo from half way arround the world.
Narrowed down my list to either a T25 or a K03. Or an IHI RFB5.

I know the smart guys are geting them for 75$ off dsm.org or 35$ from the junk yards. On ebay they are going for crazy prices. With coments like only done 40,000 Miles NO SHAFT play right.

Re:Turbo for carbed engine
 

you might wanna look at what this dude with his ecort. its essentially the same concept.

http://www.student.uwa.edu.au/~smcca...rt/escort.html

he put the carb befor the turbo.

Re:Turbo for carbed engine
 

your boost limitations i think the carb limitations are like 3-15psi depending on the carbs.
thats so bs. I have an mk4 escort with a weber carb on it and i can pump the boost up to 25 psi, without re-jetting it . you just have to check your plugs for the first little bit. as for pressurizeing the carb just plug all of the holes and make sure you have a weber or dulorto

Re:Turbo for carbed engine
 

how long have you been running 25psi On what style of turbo system. ( blow through or draw through ) are you running really rich on the low end.. what are you using to compisate for on and off peak boost.

how many sets of plugs have you melted

as for dellorto and Weber carbs they are only way to go.. they can be spendy ( if your in the US ) ( try ebay. )
webers are $100 used on average. ( 40mm, 45mm )

well please be specific on your turbo system. in that regard. its hard enough to set up a relaible system ( not like allot of tunners let these secrets out )..

Re:Turbo for carbed engine
 

Man if he could Turbo that ole escrt I should be able to do mine.
Its a 99 Modell Suzuki nice Jap Engine everything new and shiny. Must get some pics up for you guys.

Its going to take me a year to get the Turbo over. You know with Relatives that come home for christmas. So I better get all the parts I need in one shot.

Re:Turbo for carbed engine
 

yeah get pics so we can see what you're building.
good luck. it seems like a truly challenging project.

Re:Turbo for carbed engine
 

A simple quick one.
Are all T25s Liquid cooled or do you get some without Liquid cooling i.e. only Oil.
Probelm is on ebay I see some T25s and cant make out if it has plumbing for watter or not.


Ps: Hey that link on the Escort was trick its cleared up a lot of questions for me thanks a ton bro.

Here is some info on my Car

http://www.autoa2z.com/home/TechDetail29.htm

http://auto.indiamart.com/cars/maruti-esteem/index.html

Re:Turbo for carbed engine
 

I would boost into the carb rather then vise-versa. maybe that's just me though. it's simple enough man. just make a turbo manifold, bolt the turbo to it, make a charge pipe that goes to an intercooler, then to the carb in factory location. put a hell of a jet on the thing, and run rich as ----, then lean it out as much as you are brave enough to. have a blast, post pics.

Re:Turbo for carbed engine
 

Please go to "wheelsjamaica.com" in the forced induction section. There is a guy that put a turbo on a carburated car. Long list of parts needed and technical information available. FYI...prices listed are Jamaican dollars so don't be alarmed.

I hope you will get the help you need.

Re:Turbo for carbed engine
 

sg143003 date=1076212534]
how long have you been running 25psi On what style of turbo system. ( blow through or draw through ) are you running really rich on the low end.. what are you using to compisate for on and off peak boost.

how many sets of plugs have you melted

as for dellorto and Weber carbs they are only way to go.. they can be spendy ( if your in the US ) ( try ebay. )
webers are $100 used on average. ( 40mm, 45mm )

well please be specific on your turbo system. in that regard. its hard enough to set up a relaible system ( not like allot of tunners let these secrets out )..

I have only ran a max of 25 psi. but for daily use I run 15-17 psi. It's a blow truoght system(the only way to go) the way I get the carb to compisate for the turbo is to run a line from the output side of my turbo to the top of my fuel reg. this way I don't have to run rich as my boost goes up so does my fuel pressure.
i haven't melted any pluges and a factory weber is what i am useing

Re:Turbo for carbed engine
 

I haven't read the whole post, but there are 2 guys here with turboed carbed cars....both are Pug's....but they're four stroke.

Re:Turbo for carbed engine
 

Ok striped the carbs today its a Mikuni with a built in fuel pump It has two holes on hole is 26mm in dia and the other is 30.

This carb looks really trick its got 4 diaphram thingies which work off vacum. Its a modern Jap carb I dont think I need to change it.
Ive taken some pics of the engine bay maybe somebody will recognise the engine and know what to do.
The carb looks like its got tons of features not yet implemented based on the casting. Need to figure out more. About this carb. will post pics soon. anybody with links to Mikuni car carbs.

Re:Turbo for carbed engine
 

Mikuni is a good carb

Re:Turbo for carbed engine
 

I think a 2000 Mikuni is better than some 60s carb off a junker. But I could be wrong. Anyway After nearlly destroying this carb. Was up the whole night figuring how to put it back together. Here are the pics.

1. The engine Bay
http://www.eindiancompanies.com/car/bay1.jpg
(I will get one of the manifold Im pretty sure a lot of cars use the same type of exhaust manifold.

2. The carbs
http://www.eindiancompanies.com/car/carb3.jpg
http://www.eindiancompanies.com/car/carb4.jpg

In carb4 it looks like the casting is there to take some aditional do-dad that wasnt installed in this carb any idea what. Also there are two wires leading to the carb what do these wires do.