Im going to be stepping away from the all-motor scene this winter and start my turbo build up on my car. Im in a bit of a dilema though. As it sits, my car has a jdm type r motor thats laying down this:



My questions are this. Should I boost this motor or not? I would like boost with a stock block and head, and my cars stock compretion ratio is a somewhat limiting factor. Does anyone have any experience/dyno graphs/input on boosting these motors? Ive tried to search but came up with nothing. If worst comes to worst, Im going to keep my tranny and boost a b18b. I want to do all of this right the first time, and Im not going to skimp out on fuel management, tuning and the turbo kit itself. Any help would be appreciated.

 

turbo kit, AEM, AEM UEGO, RC Injectors....and TUNING should do the trick..
you can do it easily on the stock motor..it's been done before

 

A custom turbo kit, Hondata, 580cc injectors, NKG plugs, Hondata intake manifold gasket, Inline Pro head gasket and you are on your way. Low boost + that compression (?10.8:1?) + an Inline Pro head gasket = Good amount of power.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tunedbylorange.com &raquo;</TD></TR><TR><TD CLASS="quote">turbo kit, AEM, AEM UEGO, RC Injectors....and TUNING should do the trick..
you can do it easily on the stock motor..it's been done before</TD></TR></TABLE>

I question your use of the word "easy"...there is nothing easy about tuning a boosted R even with lowered compression...and its not gonna be cheap.

 

Go for it its been done before.

 

Boost on a daily driven stock internalled ITR is bery possible and not that big of a deal.

It's all in the tuning.

 

you're right it's not easy for the average Joe...but it is "relatively speaking" easy for some one who has the experience and the knowledge...I did not mean easy for some one who has never turned a wrench before

 

81k miles 15psi daily driven stock internals. went 13.1@108 on street tires with full interior.

ohh no stand alone or BTM

 

race gas?

 

where you located in pa? this i wouldlove to see

 

pump gas 94 octane.

ITR206 I live near Nekkid R. I pretty much set my car up at his shop. we are about 20 miles south of pitt. let me know if you are ever out this way

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BoostedITR41 &raquo;</TD></TR><TR><TD CLASS="quote">pump gas 94 octane.

ITR206 I live near Nekkid R. I pretty much set my car up at his shop. we are about 20 miles south of pitt. let me know if you are ever out this way</TD></TR></TABLE>

stock compression?

 

inline pro 3mm head gasket

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BoostedITR41 &raquo;</TD></TR><TR><TD CLASS="quote">inline pro 3mm head gasket</TD></TR></TABLE>

Which gives you about 8.7:1 compression

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BoostedITR41 &raquo;</TD></TR><TR><TD CLASS="quote">inline pro 3mm head gasket</TD></TR></TABLE>

that makes the difference there, now i can see it

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 0x64 &raquo;</TD></TR><TR><TD CLASS="quote">A custom turbo kit, Hondata, 580cc injectors, NKG plugs, Hondata intake manifold gasket, Inline Pro head gasket and you are on your way. Low boost + that compression (?10.8:1?) + an Inline Pro head gasket = Good amount of power.</TD></TR></TABLE>

 

I don't think its the compression as much as the pistons themselves. Stock ITR pistons are suprisingly very weak. I wish I had pictures of mine when the came out in like 5 pieces when my engine was rebuilt....they literally shattered to bits. And high compression doesn't add to the joy either. Higher compression really decreases your margin of error whenit comes to tuning. I have 9:1, and even then, my tuner grimaced and told me that it will be a challenge to tune it. She spent a lot of time on the dyno getting it right.

So my advice is, unless you feel really lucky, get forged pistons. High/ low compression is your choice, but not on stock...they will not last long ...trust me!!

 

the fact is that your tuner must not be that great or he doesn't know the system very well. stock pistons will hold up fine if you over fuel. the reason yours probably broke apart was detonation. I have seen forged pistons come apart under the same conditions. on top of that DSM's use cast pistons factory and their motors are good for 400+whp on bone stock internals.

point is the lower compression the higher the threshold for detonation so you can get away with much much more.

 

Supercharge it,, so much safer!!!!

 

My tuner is ******' awesome...SHE was able to pull horsepower out of nowhere! As far as blowing my stoc pistons, this was done before it was tuned properly...YES, properly tuned, you can get away with ITR stock pistons and rods, but it will leave VERY little margin of error. You will have to be pretty close to perfect the first time out or you can blow it. And yeah, I suppose you can get away with dumping a whole lot of fuel, and retarding the timing so much that it could join the special olympics, but what fun is that??

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ATgrills.com &raquo;</TD></TR><TR><TD CLASS="quote">Supercharge it,, so much safer!!!!</TD></TR></TABLE>

Yea, non-intercooled boost that creates excessive wear on the crankshaft is safer

 

There is nothing wrong in boosting a itr motor. I have done 2 cars without any problems. The first was a usdm itr w/ a apexi turbo kit. It didn't make much power, around 240-250 whp on a afc/fmu set up at 12psi on pump. There was no detonation at all and air fuel was constantly safe at 11:1 ish. The second car was a custom kit I built. This car had 330cc injectors, fmu, and custom ecu programing made 373 whp at 10psi with full 2.5 inch exhaust and air filter on the turbo. This car has run on pump on the street with ignition timing retarded.

 

I ran 8-12lbs on my stock ITR motor for 30,000+ miles without ever a problem. When we pulled the motor it was perfect. Stock headgasket by the way. J&S will save your life as far as I am concerned.
Stock compression and boost is goooood.

scott

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boosted92 &raquo;</TD></TR><TR><TD CLASS="quote">

Which gives you about 8.7:1 compression </TD></TR></TABLE>

The 3mm Inline headgasket drops compression 1 full point

 

Well then who the hell can Spunkster do it for 40Mile +

I wanna see 10PSI of turbo on a stock motor for that long!

Tyler