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How to Turbo a 3.3L / 202 Made Easy.

Started by _glennhailstone_ , Feb 14 2015 04:10 PM

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#1 _glennhailstone_

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Posted 14 February 2015 - 04:10 PM

Hi all,

 

I have got a 3.3 blue block that I want to turbo. I know there is a thread about turbos and sixes on here but its very confusing, so I want to try and keep this one as simple as possible.

 

I want to use a single carburettor setup up as shown in these photos. Either one would be great.

 

If the people who have had experience in this field could please list some easy to understand steps that would be very much appreciated. 

 

Compression ratios, pistons ect.

 

BIG QUESTION. Can you buy a turbo kit for these, as that would make the job so much easier.

 

Picture478.jpg202%20turbz.jpg564-114.jpg565-115.jpg

Holden_186_Turbo_Lc_Lj_Torana_15954422.jLet the games begin

 

 

 


#2 _Bomber Watson_

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Posted 14 February 2015 - 04:21 PM

First thing you need to decide is draw through or blow through?

 

You have a mixture of both, first pick is a mates car, blow through, next two are draw through, last one is blow through as well. 

 

Look at where the carb is in relation to the turbo. 

 

After deciding which way you wish to go, the rest will be easy. 

 

Draw through you can buy a kit, blow through, although superior, will require fabrication from scratch. 

 

Cheers. 


#3 EunUCh

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Posted 14 February 2015 - 04:32 PM

or score yourself a strata kit that will bolt up with minimal fuss...there are still a couple around the ridges...depends on what intended use is.


#4 _Bomber Watson_

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Posted 14 February 2015 - 05:36 PM

Hence, as i said, draw through you can get kits for.....


#5 _glennhailstone_

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Posted 14 February 2015 - 06:35 PM

Cool, thanks for that. Ok, blow through it is then. I like the way you still use a normal inlet manifold and carb. 

 

I have seen plenum, carb and manifold kits on ebay (the plenum was branded but I can't remember who by) but I can't find them anymore.

 

A bit of fabrication for the plumbing is ok.

 

Bomber, your mates car! would you be able to get some more photos, and maybe some more info, like is it air cooled or inter-cooled, any special oil lines ect.

 

Thanks


#6 _Bomber Watson_

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Posted 14 February 2015 - 06:51 PM

THat setup was just dummied up years ago, I ended up buying the turbo and a few other bits off him a bit later, then he got them back off me a few years ago, no idea of the current status but it never acutally ran. 

 

Cunning Stunt still hasnt payed me back actually, now that i think of it. 

 

It almost sounds like you dont know a whole lot about turbocharging, which is fine, but before delving to deep into this subject, and asking to many questions, could i suggest you pick up a book called "maximum boost by corky bell" and have a thorough read?

 

When i was a bit younger and very curious about the subject i read that book, then read it again, cover to cover, and learnt a LOT. 

Its a bit outdated but still the best reference i have seen that covers all the basics. Does not cover anything at all particularly for a Holden six, but at the end of the day there just an engine, the same principles are applied to any engine within reason. 

 

I set up a very basic blow through turbo setup for under a grand using info out of that book, along with a lot of hard knogin scratchin, and it worked reasonably well...Currently on a stand in my shed, the car it was in is long gone, will revisit it one day. 

 

Cheers. 


#7 EunUCh

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Posted 14 February 2015 - 07:09 PM

ohhhh nooohhh,,,not another hand grenade.... :)


#8 _Bomber Watson_

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Posted 14 February 2015 - 07:10 PM

Was a dud, never actually exploded haha. 


#9 wot179

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Posted 14 February 2015 - 07:19 PM

http://www.bookdepos...CFU6VvQodIC4Aig

#10 _Bomber Watson_

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Posted 14 February 2015 - 07:53 PM

Yep that one. 


#11 dattoman

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Posted 14 February 2015 - 08:31 PM

I'm going to give a draw thru a go using CD175 Stroms...I have about 6 crates of them after all

Carbon seal in the turbo and wind the boost up till something breaks


#12 Uncle Chop Chop

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Posted 14 February 2015 - 08:59 PM

Glenn, here is a simple reply for you:

 

http://www.gmh-toran...ks/#entry407009


#13 _Lazarus_

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Posted 14 February 2015 - 10:07 PM

Stinga had a thread going about his blow through set up didn't he ?


#14 _glennhailstone_

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Posted 15 February 2015 - 05:34 AM

Thanks for all that.

 

You are right Bomber I don't know much about turbos at all, so I am here to learn as much as I can. 

 

Cheers


#15 Redzone

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Posted 16 February 2015 - 12:16 AM

FC RX7 have a carbon seal in the turbo standard btw :)

#16 _glennhailstone_

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Posted 16 February 2015 - 03:07 AM

^ I don't know what that means.



Intercooler?

 

Cam specs anyone?

 

Thanks.

 

After reading the other thread. It looks like 9.5:1 comp ratio and 12psi boost is good.


#17 axistr

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Posted 16 February 2015 - 06:05 AM

I would just use the injection setup off a late model 3.3 commodore engine. Then use a Motec engine management computer.


#18 _Bomber Watson_

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Posted 16 February 2015 - 07:23 AM

One more time just incase someone missed it, get a basic understanding of turbocharger systems and there operation before starting.

Maximum boost is a good place to start.

Imo its no god asking for example if you should run an intercooler, you should know why you should run an intercooler and the pros and cons before setting out and spending money.

Its all well and good to just ask lots of questions but no one here is an absolute expert on the subject. Reading a book by one of the leaders in the feild will be a far better place to get your head around the basics.

The perculiars relating to a holden six are then easy to fill in.

Edited by Bomber Watson, 16 February 2015 - 07:24 AM.

#19 _glennhailstone_

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Posted 16 February 2015 - 08:54 AM

I just got told off. Hahahaha. Ok Bomber, thanks

#20 Uncle Chop Chop

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Posted 16 February 2015 - 11:29 AM

^ I don't know what that means.



Intercooler?

 

Cam specs anyone?

 

Thanks.

 

After reading the other thread. It looks like 9.5:1 comp ratio and 12psi boost is good.

 

The 9.5:1 comp and 12 psi boost is for E85 fuel. What I linked was advice from a guy that used to race in Group NC Historic. I think a lot of people here respect Gregs advice. You need to start to learn from somewhere. As you are a beginner, look for a build that has parts that you could easily get. Then start buying the cheapest parts first and ask any questions you don't know the answers to. And don't just ask questions on these forums. I am sure there are plenty of people who are not registered here that could explain things to you.


#21 _glennhailstone_

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Posted 16 February 2015 - 01:40 PM

Ok sweet, thanks for the advise.


#22 _coupe202_

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Posted 16 February 2015 - 05:11 PM

I don't think you need to use E85 with 9.5:1 comp with 12 psi of boost 98 pump fuel will be fine.


#23 _Bomber Watson_

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Posted 16 February 2015 - 07:25 PM

And this level of conflicting information is why i recommended the book from the pro.....


#24 Uncle Chop Chop

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Posted 16 February 2015 - 07:45 PM

I don't think you need to use E85 with 9.5:1 comp with 12 psi of boost 98 pump fuel will be fine.

Did you look at the link I posted?


#25 _Bomber Watson_

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Posted 16 February 2015 - 08:12 PM

He probably did, and this is where it gets tricky....

 

12psi boost with x turbo is not 12psi boost with Y turbo, all sorts of factors some in like compressor efficiencies and boost threshold, which interplay with things like camshaft duration, ign timing, general state of tune, temperature of the engine, what kind of intake charge cooling you have etc. 

 

9.5 at 12psi on 98 octane is perfectly achievable...But a different combination of the above could ping like a motherfrOcker and require E85....

 

Cheers. 


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