Turboing a CIS

[burn_your_money]

I am considoring turboing my CIS engine. I don't know what car I would drop it into, but probably a rocco if I can find one. Anyways, what I need to know, is what all I have to do. I need forged pistons and crank shafts right?
I know it's been asked before, but if I put a diesel turbo on, I would only be able to get the RPM to 4500 before I have to shift right? and around that RPM it would be pretty useless? Is there a way I can make the turbo put out more PSI?
What else do I need to buy?
Does anyone have any useful links? not to kits, but information.
I will be rebuilding my head (don't know if it is nessecary, but the head needs it). Are there any special parts I would need for that?

Should I bore my engine out while I'm at it? or would that cost me mad money?
The engine is a 85 from a jetta with 250 000 KMs. Or I could use my GTI engine. It's a 8v with 160 k kms. What one would be better?

I know I know nothing about this, so don't bother telling me that. I don't plan on doing this anytime soon, its just something for me to do when I get time (and we all know how often we get spare time). Right now I am just collecting information, and then when I feel capable I will start rebuilding.
If you don't mind telling me what you would do (engine wise) if you had endless amounts of money and were considoring turboing, I would be happy to hear it.
Thanks guys :D

[Getta8v]

you might as well use a T3 turbo they are just as cheap to acquire nowadays and are good for quick spooling. u dont really need to go all out on the forged stuff but it would be nice to have. you'll need a T3 exhaust manifold, T3 turbo, oil return and feed lines, downpipe, intercooler( you dont have to run one but its nice to have), blow off valve, you can either run an Internal or external wastegate, tap your oil pan for the oil return line, get all your plumbing done and get a boost controller(manual is cheaper but electric is nice) boost gauge is a must and oil temp is great and exhaust gas temp (EGT). I know i listed a ****load but thats all the basic stuff you need to get it going along with stacked headgaskets to lower compression.

[Mr_Diesel]

I wouldnt go through that much trouble... Just get EIP's copper head gasket to lower the compression, and you should be okay to run a turbo... But the engine will probably need a rebuild after 40,000 miles.... I drive 40,000 in like 3 years so I think that would be worth not putting the money into forged crap.

[2002maniac]

Many people have had good luck stacking 2 stock head gaskets. Leave the motor stock internally. a stock motor in good shape can hold over 200hp. Dont even bother with the TD turbo. way too small. Your car will be able to rev over 4500 but once the turbo passes its limit of efficiency, it just starts scorching the air. This is detrimental to power and can cause pre-ignition/knock. As far as Fuel management goes. a fuel enrichment module will do fine

[burn_your_money]

Ok. thanks guys. So Cody, my crappy 1.6 TD (your old one) will have most of the stuff I need?
the head on my CIS is in need of a rebuild. I think anyways, oil is getting by and the engine has 280 000 kms on it.

Where can I find this T3 turbo you speak of? what will happen after that arbitary 40,000 mile mark?

I think I have one of VWs lowest compression engines, am I still going to have to lower it?

[Mr_Diesel]

Ok. thanks guys. So Cody, my crappy 1.6 TD (your old one) will have most of the stuff I need?
the head on my CIS is in need of a rebuild. I think anyways, oil is getting by and the engine has 280 000 kms on it.

Where can I find this T3 turbo you speak of? what will happen after that arbitary 40,000 mile mark?

I think I have one of VWs lowest compression engines, am I still going to have to lower it?

You can use the TD turbo and manifold, but you won't be happy with the top end like Cameron said. If you do use the TD turbo and manifold remember the turbo outlet will be pointing the wrong way so the snail shell (diesel's fancy name for the turbo housing) will have to be turned 180 degress.

The 40,000 mile mark is just a rough guesstimate of how long the engine will last with good compression. After that, the piston rings will start to fail, compression will slowly go down, and it will burn more oil. A ring job should fix that problem.


The 1.8L 8V engine has a compression ratio of 10.1 to 1... Stacking headgaskets is not reccomended and will usually end up in gasket failure, so if you are going to stack gaskets atleast get the all metal gasket from EIP tuning and you'll have better luck... Lower your compression to 9:1 or even 8:1. The lower the compression the more boost you can run, which would make for a wild ride. I'd probably try 20 - 24 psi with 8:1 compression (which by the way will NEVER be attainable by the TD turbo.)


Good luck.

[Matty-O]

guesstimate

i love that word :twisted:

A ring job should fix that problem.

lol he said "ring job" 8O

[Mr_Diesel]

guesstimate

i love that word :twisted:

A ring job should fix that problem.

lol he said "ring job" 8O

Dirty thoughts.... 8O

[burn_your_money]

Thanks everyone. How hard would you guess it to be to go scrapyard hopping and me finding most of the parts I need?

What all can be used from the TD?

How low of compression can I go?

[GoodDayForADrive]

Thanks everyone. How hard would you guess it to be to go scrapyard hopping and me finding most of the parts I need?

What all can be used from the TD?

How low of compression can I go?

Really hard in GA, I can't find ANY junkyards around here...

[jettadude]

ok this is my project. im gonig to get a 1.8 16v and make a custom turbo setup for it. im going to try to get a cheap stand alone fuel manangment system. i can get the engine for almost free. needs rebuilt. oh and im going to turbo my lawnmower. lol ill see how that goes.

[Mr_Diesel]

ok this is my project. im gonig to get a 1.8 16v and make a custom turbo setup for it. im going to try to get a cheap stand alone fuel manangment system. i can get the engine for almost free. needs rebuilt. oh and im going to turbo my lawnmower. lol ill see how that goes.

Better start looking for a vr6 tranny and a cable shifter setup before you plan on driving it...

[jettadude]

i was just gonna build the motor. i had no intentions of putting it in anything i would sell it and build another.

[Gotturbo]

From what i've read its hard to run anything more than like 7 or 8 PSI on CIS injection.

[burn_your_money]

Ever since I got in a diesel I've forgotten this crazy idea

[Mr_Diesel]

From what i've read its hard to run anything more than like 7 or 8 PSI on CIS injection.

That's about all you are going to want to do with stock internals on an old engine like that anyway... CIS is VERY limited... Better than digifant II, but very limited.

[jettadude]

im just stuck on how im going to turbo my lawnmower. i can fab up everythign i need but, 1 its carbed and i dont know where to get bigger jets. 2 how am i going to get oil to the turbo, and 3where am i going to put all of it?

[16vjetta]

I would think for CIS there would be some way to custom build a fuel ditributor to make the fuel richer at higher rpm other than the fuel enrichment module. I am running enrichment and it's not noticable with the BMW injectors. As for the lawnmower, Is this a riding lawnmower? Push start or electric? If it's an electric start riding I would use a seperate oil resivior with an electric pump of some type with its own inline oil cooler. Pull start with no electric would be tuff.

[NOok]

I have a ton of the parts needed for the CIS turbo set up. I'm going with a differnet route with a stand alone fuel and ignition system, and a differnet turbo, but I have pretty much the whole kit of the hard to find stuff if you still need it.:

http://forums.vwvortex.com/zerothread?id=2400707

[eldorado]

I've actually done a few cis turbos and they're a great setup up to 8 psi with stock vw cis parts. I have all the parts and proper turbo for the psi range. A couple of things would the car require an emissions test? What chassis is the turbo going into?