Carburetor Turbo DONE!
 

Hi all! I Have joined this forum because I built my own DIY Turbo conversion on my carburetor Nissan GA15DS, check out my build on this site

http://www.nissanownersclub.co.za/fo...ic.php?t=10692

I know this is mostly a Honda users site and I know most guys still drive the carb versions of the honda's, you guys can do this too, its sooooo cheap

feel free to ask questions

add pics to this forum so we dont have to look threw 9 pages on another forum

Attachment 4489
Attachment 4490
Intercooler from a Opel TS
Attachment 4491
electric 12v 0.6bar fuel pump, note that carbs cannot handle more than 0.8bar, and that fuel pressure on a carb turbo should be 0.3bar above the boost pressure
Attachment 4492
Local made dumpvalve by Ferroli
Attachment 4493
Garrett M27 water cooled turbo from a Hyundai 2.5tdi
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parts
Attachment 4495

how is the intercooler getting air through it?

you got a 14.2 out of that ----? Gangsta!

There is induction pipes running from the bottom of the car to the intercooler, can you those 2 black pipes connected to the intercooler? also my bonnet is lifted to the max a the back, so there is also no engine bay heat that can heat up the intercooler :D

yeah, with a quarter tank of racing fuel and slicks in front ;D

you might as well remove the intercooler as it is doing nothing on that setup. the flex hoses will do nothing to cool off the charge pressure because there restrictive and there only sending air to a small portion of the intercooler. you need to build a box around the intercooler and make piping that will actually flow to the intercooler in order for that ramming effect to do anything. why didnt you put it in the front of the radiator? it would be easier if you used a water to air cooler instead of the air to air cooler your using now.

dude, this was all done in 5hours and 5 beers, im not a mechanic im a I.T. tech, I know the intercooler is not 100% now, just need more $$$ for a better intercooler setup, total cost was R6000

i understand but as of right now its just a restriction. remove it and wait till you have more money to make it better. thats all im saying.

just a restriction? how did you do that calculation homie? its better than no intercooler at all at the moment dont u think :o

calculation? your intercooler is very small. look at the inlet and outlet diameter of the the intercooler and then look at the size of the pipes going in and out of the intercooler. its a large reduction that the boost need to go through. an intercooler is a restriction by nature. well designed intercoolers can reduce pressure by as little as 0.2 psi while poorly designed intercoolers can reduce boost pressure by 2 psi or more. reguardless of the boost drop the intercooler can lose the main point of the intercooler is to cool the air charge which in your case it is doing no such thing. i understand your upset by my recommendation because you spent a whopping 5 hours on your build and you think you know more than everyone else but i am a trained technician and have extensive knowledge in engine and turbo design. my main source of turbo builds is on motorcycles and every once in a while i do a turbo build on an automobile so i think my recommendation is more than adequate.

im not upset at all, lol! ;D im just a bit surpized that u think my intercooler idea is totally useless, awh well, what if I encased that intercooler in water?

oh and I believe im the first person to ever do this conversion on this engine ever :D

your best bet is using a water to air intercooler. its just a little more work but it will benefit your setup.

you will need the following:
water to air intercooler
water hose
misc an fittings
water pump
water resevoir
radiator

LOL! il just rather make a hole in the bonnet

Attachment 4411

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putting a hole in the hood is not going to force air through the intercooler. anyway i see your set in your own ways and you dont want help so good luck.

fmic, here we go!

my suggestion would be:

create ducting from the front of the car to funnel into the intercooler. do not allow for air to bypass it.

something like the picture below

https://www.homemadeturbo.com/attach...ine=1316009301

Cool man!

I don't think the intercooler is the restriction in this setup, probably the carb itself is I would think. Anyway how many PSI you running? At work the kits I have installed use an intercooler 1/2 the size and we are getting 270hp out of a 1080cc engine.....

Thanks for the pics. Are you satisfied with the outcome? How does it run?

I got to agree with others,the cooler is not grabbing cold air but the air from the heated engine. the whole idea of a cooler is to "cool" the intake charge.you are working with what you got I understand but,the way you have it might be "heating" the air instead of cooling.not much but a little with the fans forcing the hot air i to it.think about it,how hot is the under hood temp under boost?hot air rises and you are forcing that temp threw the cooler.an air to water would be your best bet the way it sits you do need it in front of the rad.to do anything.I commend you on doing the conversion good job but it needs a little tweaking to give you better HP.

You could turn the IC 90 deg and set it up like a top mount (similar to the 2nd jen RX7 or the WRX setups) You will have to build a small box that would seal the IC to the bottom of the hood when it is closed. After that install a hood scoop (again I would go with one from a wrx or a 2nd Jen RX7) and it should work. The only down side to a top mount is that it will eventually heat soak but hay considering what you did in 5 hr and such a low $$$$ amount congrats!!!!! Good work Keep us posted on the progress.

Digging the build, looks like a fun setup. They are right about the intercooler though, what you have now is a interheater (as corky bell would call it). He warned that you should beware of the interheater in his book, Maximum Boost.

If you are running over 6psi, i would recommend you run a front mount intercooler. If you are running 6psi or less, I would replace that intercooler with a piece of insulated pipe and call it a day. Just make sure your turbo is pulling in air at ambient temperature.

Thanks dean! The bonnet is lifted 10cm at the back, so there is no hot air hanging :P im boosting 0.3bar now, because of the crap clutch i got that can only handle that boost otherwise it slips, its a 100kw clutch, so i downtune it.

"When" i boost more the IC will move to the front and by then the clutch will be replaced by something more gripping. for now this is my weekend fun car :D

Got this over the weekend :D

https://www.homemadeturbo.com/attach...ine=1334234818

9 potential 50mm couplers here

https://www.homemadeturbo.com/attach...ine=1334234818

you did yourself a big favor there.it is going to help you a lot

correct, the previous intercooler was a test setup, just to make shure everything actually works, lol! with this intercooler i can advance my timing again, because i had to retard it alot to work with the hot charge i was getting ... the advance timing will also get me better fuel mileage :D

id just lose the intercooler and go with water injection. its cheap and easy and you can run all the timing you want. intercoolers are great for 10psi+ but for low boost, there isnt enough pressure or heat in the charge pipe to offset their parasitic losses.

The definition of a ricer, PC fans and all. I'll save that picture to share for laughs.

yeah, like i said, the little intercooler and fans was just for TESTING purposes to make shure the setup will work because no one has ever tried this on this engine, making me the first, you are welcome.

You are many things, but first at anything you are far from.

dude dont troll me without facts ...

The fact you clearly drive a ricer?
The fact you don't know what you're doing?
The fact you're not first at anything?

thanks for all the hate :D

No hate, I'm amused by your attempts at being "first" at something.