Wanting to turbo

[andrew22888]

Ok just bought my h22 cb7. I have had a couple but now I have a extra block sitting around. I am wanting to run about 7 psi and be able to be reliable. I understand boost leaks happen and what not. But i'm talking more of block wise. I have built several SBC and N/A f and N/A h22's but never have turbod a car. So can someone give me a starting place to make sure the h22 is gonna hold up to boost on a daily basis. My budget is about 4,000 my brothers father in law owns a machine shop so any of that work will be rather cheap. I don't want you guys to spoon feed me or anything. Just throw me in a good direction of books to read or anything along those lines. I am very mechanically inclined just when it comes to boost I consider myself the biggest noob out there.

[Jarrett]

I guess I don't understand how your situation is different from anyone else who has ever asked the question. To answer such a broad and commonly-asked question would still be possible with any search attempt into the subject.

Anyway, you know you're going to want stronger rods and forged pistons for starters. You can either go with a low-compression build that's safe to tune or you can go with somewhere in the neighborhood of 10.0:1 to 11.0:1 if you're confident in your tuner so that you have good out-of-boost performance.

The pistons you choose will either have to be Mahle Gold series pistons that are FRM cylinder friendly or you'll need to have the block sleeved. Whatever you decide you should have the machine shop check the clearances of the pistons in the bores once you have them. If you go sleeved then you can go any size of piston you want up to 90mm and order pistons with boost-friendly piston-to-wall tolerances. You'll want them looser because of how much a piston expands under the heat of boost, though not so much if you only plan to run a moderate level.

Anything else is really identical to what you should be doing if you were building an N/A H22A also. The crankshaft journals should be checked and verified for trueness and finish. Then OEM Honda bearings with the corresponding clearances should be ordered to install it.

Whether or not you want to eliminate balance shafts or piston squirters is up to you and where you stand on your oil pressure requirements.

[andrew22888]

Not really easy to answer with a search. I mean I have heard of people melting pistons. And such noone ever gives a real clear answer just well what do you wanna do with it. Never a clear answer. My list is already sitting at this and let me know if I left something out.
Pistons
Rods
valve job
better valve springs
Cams
spark plugs.
Gasket kit
Head studs
Racing t belt
Manual tensioner
Turbo manifold
Turbo
Intercooler
Piping.
BOV
I already have 450cc injectors sitting here got them for free.
What am I missing is basically what i'm asking. I know i'm forgetting stuff
just wanna make sure I have everything right. And do you follow same torque specs as the stock motor when it comes to head gasket and such?

[Jarrett]

Aside from the pistons, rods and headstuds most of the stuff in your list is for the head which is why I didn't address it. You made it seem like you were just building up a block.

The injectors are fine but they will be pretty close to maxed out at 8 psi on that setup. I would prefer to have some new injectors with a slightly higher flow rate for the insurance and to make things easier on the tuner to know he has a cushion built in if you were to go with slightly higher compression.

The other stuff is fine but you sound like you're just listing every component you've ever seen an upgraded version of.

For instance, do you know what range of spark plugs you'll need? What power goals do you have to necessitate higher profile camshafts and stiffer springs?

First figure out your power goals and what you want daily drive-ability to be like. 8 pounds of boost on a built H22A will be enough to scoot around and push 280 whp. If you want more then the other variables come into play.

[illinois_erik]

mainstuds. line bore.

[toycar]

1.)The injectors are fine but they will be pretty close to maxed out at 8 psi on that setup.

2.)I would prefer to have some new injectors with a slightly higher flow rate for the insurance and to make things easier on the tuner to know he has a cushion built in if you were to go with slightly higher compression.

3.)What power goals do you have to necessitate higher profile camshafts and stiffer springs?

4.)First figure out your power goals and what you want daily drive-ability to be like. 8 pounds of boost on a built H22A will be enough to scoot around and push 280 whp. If you want more then the other variables come into play.

1.)How could you say what the injectors will be doing at any psi without knowing the trim of the turbo?

2.)New injectors don't exactly = higher flow rate. Again, how can you determine what injectors are needed without knowing what the specs are on the turbo?

3.) Forced induction is always enough to get a different cam profile if the current cam was for an N/A setup

4.) PSI has nothing to do with how much power you are making. 8lbs of boost on a t25 is a completely different amount of flow vs a 16g.


Not trying to argue, Jarrett you usually have much better responses.

[Jarrett]

I fully understand those things. I was answering a vague question with general responses and not the information necessary to begin ordering parts.

The injector recommendation involves the input of not knowing the quality or internal condition of the free injectors and the fact that new injectors have much more reliable flow rates.

You're right about not knowing the size of the turbo. However, I made an assumption as to the ranges of turbos the op would be choosing given that I had little information at all from him. Usually when someone who doesn't know anything about turbos and just gives the standard "8 psi" goal you have a fairly good idea of what type of driveability they want.

[andrew22888]

This is going to be daily driven. And the injectors are brand new. I am building everything I can to make it very reliable. Exactly I don't know what size turbo to run or anything like that. Cause noone ever goes over that I know I don't want to get to big of one or to small of one. I know how a turbo works but the exact stuff I should get there is little to no information on exactly how to build for the setup your looking for. Which is why I asked for any books available. On compression ratios and what not.

[evil_demon_01]

This - Maximum Boost: Designing, Testing and Installing Turbocharger Systems

There is alot of information on CB7Tuner, you just have to look for it, The answers are there.

Even the Sticky at the top of this forum has 2 seperate threads that could have answered your Turbo sizing question.


Look at other peoples MR threads, most will detail parts and reasons why they used them.

Heres 6 people right here:
Accord_SIR
bjaccord
DRQPQUT
Mozzandherb
Sordz
MR.PHIL