Ok, so i've got the fundamentals of a turbo engine down (or so I'd like to think).

Stock honda engines can handle boost. With the proper fuel set-up 10psi daily is not unreasonable. However, daily is relative. Daily isnt boosting from the moment your car starts, like say a DSM would. In this respect, ill call the DSM an engine that lives off of boost, because it was designed to see boost, lots of it, and all the time.

Part of the reason that a DSM (or any other factory force-fed motor) can live off of boost is because:
1) they have the proper fuel sys right off the bat (big inj, low fuel press)
2) the blocks tend to be closed deck (correct me if im wrong with this)
3) the blocks are designed with reinforcement in the necessary places to handle the rigors of boost
4) they have better cooling than a stock non force-fed motor
5) they have forged pistons/rods from the factory

That's all i can think of now (im tired, its late).

The point of all this is, can a built honda motor happily live on boost all the time? (like a DSM, Audi, Porsche, VW, Subaru can...)

And when i mean built, i mean (for example):
b18c
Sleeved
Forged pistons/rods
New Bearings throughout
New seals/gaskets
Oil cooler
Increased oil capacity to 6+ ltrs
Beefy Radiator
Higher output cooling fans
...and a standalone for fuel.

Thoughts?

Tom




[Modified by Tomakit, 2:49 PM 12/9/2001]

 

you can dooooo it!

 

Chris, I think you drank to much tonight.

 

i dont think they have forged pistons

 

(copy)i dont think they have forged pistons(copy)

that's not the point

Tom

 

yeah they don't have forged pistons but they do have iron blocks.

 

they also have knock sensors to retard when it detonates. Which I believe saves my friends GST motor, he detonates like crap and I see his datalogs pull back timing like no tomorrow.

 

anyone?

Tom

 

i've never seen a b series crankshaft, but i can't imagine it to be as strong as the stock boost cars like dsm's and what not. Also i'd put in stronger stronger bearings while your at it, not just new ones. Other then what you've listed above, as long as you use moderate boost, i.e. anything around/under 15psi you could boost all day long if you want to and your gonna still have a working engine for a long time..

 

IIRC, the b-series crank is factory forged...

Tom

 

i think most cars have forged crankshafts, but i was referring to a stronger crankshaft material, i.e. titanium

 

I never heard of a Honda crankshaft being a weak link in the motor.


[Modified by Lsos, 6:02 AM 12/10/2001]

 

simple answer = yes

 

it's not a weak link, it's just something i've seen snap into pieces before. Believe it or not honda crankshafts do break

 

I would really like to see that happen! Wish I had more hardcore tuners by me....oh, there are none! Oh well. That must be a pretty rare occurance.

Why can't honda make everyone happy, and for one model generation, make something like a boosted civic!!


[Modified by HXMan, 12:27 PM 12/10/2001]

 

one word... ECU
that's the problem, I have heard or red somewhere that honda B18 block with PERFECT amount of fuel, timing and ignition, can handle up to 18psi of boost on stock block, not this is not realisitic at all, since Stock ECU is not programmed therefore can not compensate any kind of Boost at all....

I think ECU is the WEAKEST LINK on a Honda turboed....
building your block will help tremendously, but ECU need to be consider at an early stage IMO...

just my $ .02

stan

 

 

On a good note, not ALL OEM Turbo engines are iron block and closed...one of the BEST turbo engines is an aluminum block and open deck...

The Nissan SR20DET!

I also agree that the fuel is probably the weakest link on a boosted Honda...and if I were to go turbo, Id skip all that "band-aid" fuel stuff and get a Hondata/Etc from the start.

 

First step on my turbo project ws a Zdyne SECU. I'm wouldn't ever do it different either. I'm running 450cc mistu injectors with 40 PSI static fuel pressure. I'm looking to build my block, but I don't want to pull it LOL.....check my site. My sheit is tight(not tite)..............

 

The SR20DE & SR20DET are both closed deck blocks!

 

The WRX is open deck

 

DOH! My bad..I thought you had said they were open deck? Maybe you just said the part about the aluminum block?