Hi guys, Im looking at getting the best street port template. Could anyone direct me to them. Its going to be for a 13re motor and s372 turbo. I need intake and exhaust.

Thank You,
Jose Nieves

 

I've personally had good luck with pineapple racing templates myself.

 

Ive looked through their templates and didnt a notice a big street port option. Ive seen post where guys have very large secordaries and smaller primaries with very nice gains all over the board. I take it that you would use the templates for both primary and secondaries?

 

Judge Ito templates if he still makes em

 

judge ito

 

i use the mazdatrix small bridge template and only use the mild port ( late close ) shape
this is not an early open extendy,, and therefore has no issue with rapid wear at the ends of the side seals
the leading and closing edges of the side seal are fully captive,, yet still a nice port capable of a 17 inch vacuum

with some other templates you need to do the closing chamfer correctly as they take toll on side seals
- not recommended for new players or if your expecting another 100 000 km between open ups

 

I dont exactly think i want to do a bridgeport on the this motor just yet. Id like to see what a nice street port will do for me. I talked to Judge Ito, he has been a little busy. Im really looking for the best template that is going to be broad but still flow at the top end. Ive heard that the RE blocks flow very well on the intake side, so Im just going to open her up with a nice port and port match. There are just so many options to choose from and I only want to do this once while I have her apart. I thank everyone so far for the inputs, keep them coming.

Thank You,
Jose Nieves

 

Judge Ito...

I been trying to get these templates with no luck

 

you purchase the mazdatrix BP template and only use the extend port shape
this extend port will not limit choice to take to a bridge later,, others may

this port maintains excellent idle characteristics ,, enough perhaps to fool the law/ EPA otherwise
this port makes maximum difference up top ,, without cutting out the bottom end
it will make 350 rwhp easily with around 1 bar on smaller to4bs
i have dynod one to almost 1700 pounds of tractive effort ( 1696 pounds )

the specifics of that known car
= 1700 pounds TE x 4.44822 = 7562 N ( convert pounds to newtons )
X 0.326 ( estimate of rolling radius for 235/40 /r18 in metres )
=2465 Nm TQ at the wheels at that peak TQ rpm
= 2465/ 4.5 ( hilux gear ratio and 4th gear )

=548 Nm peak TQ at engine [ 404 pounds/ft ] - on a t04B

( ,, go on,, compare these numbers to all other single turbo rotors )


you can choose wilder ,, early open extendies
,, when you do,, expect longevity, vacuum, idle quality and just off idle power comprimises

ever seen a side seal with the ends rubbed down after minimal kms?
while the mid range the power ( of the early open extendy ) is great
,, the longevity can suck if you dont know exactly what to do with the closing ramp profiles
-- and the magic template is not going to help you there

if you have never ported before,, err to the templates that keep the side seals captive

-this is good advice- and i tell you in concern that sometimes biggest isnt best

 

Oh I see what you are saying now. I have done several port jobs already for a friend, he scribes the lines for the port(some unknown template) and I have done the work. Im comfortable porting and know how to chamfer the port so it does not destroy the side seals. I like your idea on just using the mild port part of the template. Im trying to optimize the port for a big turbo and higher boost. Im looking at getting into the 600rwp range with this motor. How does that bp template behave on the street?

 

the BP template is not intended for turbo,, which ( SHOULD ) typically have a higher , but shorter bridge to minimize the overlap
( in a turbo ,, backpressure is 2 to 3 times higher than the inlet pressure,, so think about it )

you will also find that some later plates will not allow you to cut the full length anyhows due to casting limitations


as is the BP works fine in NA applications,, there is bigger,, there is badder,, but this one just works well without too much comprimise to extremes

if you was to use this template for turbo you would measure and not port perhaps the final lower third of the bridge

i recommend the mild port for most street cars,, how much HP you want is determined by the boost factor and the limit of the fuel octane
600 hp is going to take 30 + psi ,, and very funky fuel

 

When i read all of these porting threads, I get confused by the lack of exhaust porting info.

I do not understand why everyone screams "DREMEL!" to the intake and basically ignores the exhaust port.

Yes, it takes more port area to bring in a fresh and cool incoming air charge, but the exhaust port is rather limited too. I know Inconel is like Kryptonite, but don't be afraid of it.

 

/\ i actually linked a pic with both the 12a and 13b exhaust templates
though image shack rejected it during resize






the 12a and 13b templates back to back

for high powered turbo i use my own shape
,, developed progressively over several years of use at the street meets and also with daily use

this is an old drag housing i used many years ago back in the 90's
( the bad pic makes it look rougher than it is )
,, note that the pic was taken to show that early rotors really do clash with late housings at rpm
people still argue me on that,, JHB agree with me,,
and note some of those places that offer cut down 13bt housings for 12a are now offering rotor face clearancing,,, looks like i wasn't so wrong after all

this port is very similar to that in the engine that made the excellent TQ
note the insert is gone,, and it didn't bother that engine for spool or TQ, or cause any longevity issue
( i do leave the insert in in milder engines,, and for engines intending less than 300 rwhp with manners are kept stock in the exhaust )

if you wish to shoot past 350 rwhp,, porting the exhaust will become mandatory

==

i do however use templates for the NA 12a and 13b ( on NA ) though i use the 12a D port one with the round end uppermost with bridges
this gets a better exhaust note and doesn't make the overlap so radical,, retains the square open edge stock ( if i require )


here is a few going through the port and match process







note the rx4 13b housings at far end still retain insets


add chamfer when done

 

how long does these engine last with out the exhaust sleeve?

 

Is anyone still subscribed to this thread?
If so I have a question about these exhaust ports pictured.
Are they or would they be overkill on a turbo 13b.
Would these exhaust ports out flow a gt35r.
If so what about matching the port to the exhaust sleave even if it is just a circle without a flat closing edge?
Has this ever been done before? What were your results.
If I dont get any feedback Im going to go ahead and do it anyways and will report my gains or losses in my build thread that I have going.