rkives

I was reading on this sites FAQ. In the "Engine Info" Section, the 1.8 BP-ZET states this:
Horsepower: 176 @ 6000rpm (207 @ 6000rpm for #26 block
Torque: 172 lbs/ft @ 3000rpm (180lbs/ft @ 4500rpm for # 26 block)

Where is the #26 found on these motors? The reason I am asking, is that on the side of my BPT motor, beside the distributor, is: BP-26-8-1. Is the #26 described above simply the GTR motor?

Rick

protejay

man Rick...did you order a GTX and get a GTR?!

not to disagree with TheMAN but i was reading on RandyS's site www.members.aol.com/solomiata/MX5Engine.html
that the GTR *block* is cast 'BPII' and the GTR *head* is cast '26'....so you might check to see if you have that casting on the *block*. Otherwise i was thinking you might have got a modified GTX...someone put a GTR head on it and also that 'different' turbo that you've posted about.

rkives

I will check the block to see if the block says BPII? I know that on the head it does say BP 26-8-1. hmm..
I know there were other changes on the motor, Like IHI RHB5 VJ-22 with a larger impeller and compressor than the stock VJ-20 Turbo. I wonder if there was a factory upgrade for the GTX's?

Is there any other way to find out if it is really GTR Head?

rkives

Head Casting BP26-8-1
http://www.msnusers.com/RKProtege/pr...oto&PhotoID=23
Block Casting BP 2
http://www.msnusers.com/RKProtege/pr...oto&PhotoID=21
http://www.msnusers.com/RKProtege/pr...oto&PhotoID=24

How do you tell if the intake is GTR?
http://www.msnusers.com/RKProtege/pr...oto&PhotoID=22

protejay

bummer, but i can't see the pics...well anyway, so i take it you have a GTR engine...for $1,800 CANADIAN along with a lsd trans!!!
can you do that again?? :
i don't know how to tell the GTR intake from a GTX, maybe 'itzkcatz' can help as he just got a GTR as well. you would think though that it has to be a GTR intake since the engine is a GTR...
here's the lowdown on the GTR:
www.ozemail.com.au/~kevmo/eng.htm
if you haven't, also check out that australian site i posted as it has a TON of usefull info.
hmmm you never know what you might end up getting from overseas...maybe they got this engine out of a GTX; not realizing the previous owner had put a GTR in??

turbo1g

from looking at u pictures u got a gtx motor. i might me wrong but if u can take off the exaust mainfold heat shield off and post a
picture i can tell if its a gtx or gtr. im 90% sure its a gtx motor.

cre8v mx3

the gt-r would have bpc8 on the back of the intake manifold. here's some other things to tell them apart.

injectors: gtx=black, gt-r=orange
exhaust manifold: gtx=bp26, gt-r=no number

rkives

Well I the injectors are black. So they are not GTR if that is the case. I will have my mechanic look at the back of the exhast manifold to see if any numbers are stamped. Obviously the Turbo is not GT-R. Does a GTX turbo fit on a GT-R exhaust manifold?

What do you folks with GTX's have stamped on the side of your head?

cre8v mx3

since the back of your intake manifold doesn't have anything stamped on it, along with other things...i'm going to say that you have a gtx. to answer your ? about the turbo's, no, the flanges for the gtx and gt-r are different.

turboge

Guys.... I'll post some pics of a REAL GT-R if I get some time tonight after school. The head number is if I recall BP26-8-II on a true GT-R and it has a 2 stamped on the head on the exhaust side just above the "2 BP" stamp on the block. The intake manifold is stamped BPC8 on the #2 runner on the bottom. The throttle body is stamped BPC8 on the top. The cams are stamped "26" in the center. The turbo is Huge and is labled RHF6 VJ-23.

rkives

Im suprised there isn't more info on the visable difference of the GTX vs -R. I take it the info that Randy Stocker has on the site refers to the 26 on the cams? and the 2 on the Head? Are the GT-R that rarely seen?

turboge

Considering they are as rare as a Galant VR-4 is in the US... they are rare to even see here because of the fact they were never imported for on-road use. In japan, australia, germany and europe, they were eaten up by enthusiasts quickly. Very few GT-R's claim the roads now, and those in which were no longer on the street were stripped down and used as parts for GTX bodied vehicles.

The fact that we see a GT-R motor here in the US is slim, with fewer than 1-3 left per US state in availability, when you get one, be aware you are witnessing a part of Mazda racing history. I know of at least 5 in the US, and 1 of them is in my garage right now awaiting install into a customer vehicle. I have 2 more in my sights and expect them to come through shortly.

I have made thorough documentation of this motor and will eventually create some kind of a guide for people to see what the real differences are, with dyno sheets and comparisons.

itzkcatz

Is the one in ur garage the one i picked up 2 nights ago and is in my garage? thanx braden.. mmmm GTR ...Jon 93 lx

aWeX

If you guys are putting GT-R engines in your pro`s , get ready to be the kings of the street. The GT-R handles 300bhp on stock turbo,internals and fuelsystem. A decent exhaust,intercooler and filter is everything you need to kill rice all night long
If you have the engines sitting in the garage, there is one thing you have to do before throwing it into your cars... port the head!

Here comes some info:

The intake-channels(wrong word? I`m talking on the channels that leads the air from the intake manifold, through the valves and into the cylinders) on the head is organized in 4 pairs, as on almost every 16v engine.In other words, there are 8 intake channels. In each pair,there is a small metal plate covering 3/4 of one of the intake channels, leading the air into the other intake channel. Therefore, the engine can`t suck in the all the air that it needs to produce the amount of power that we want. If you remove these metal thingys, you can lower the boost by up to 0.3-0.4 bar, and the engine will still produce the same amount of power. I run 1.5 bar on my car, but if i port the head, i can run 1.1 bar and still have the same performance. So, instead of cranking the boost waaaay up, you can port your head and let the turbo live a lot longer.


Sorry about my crappy english,I`m not familiar with all the technical terms yet...

aWeX

Here is a pic of a ported GT-R head:



Here you can see three of the four pairs that i`m talking about my above post. If you see the two small holes in each of the larger holes, imagine a metal plate that covers allmost the entire hole to the left in each pair. Now that wouldn`t be any good for the airflow? Especially not on a turbocharged engine?

I hope you understand what i`m talking about..