Bp intake manifold on bpt..

[Franko]

I dont know if someone is telling me porky pies but I remember long before I got the engine someone telling me that if you put the stock bp intake manifold on the bpt you gain like "20" horsepower.. I dont know if this is a load of crap or what but I was hoping that someone else knew about it..
There could be some truth behind it..

<small>[ September 17, 2004, 08:21 AM: Message edited by: Franko ]</small>

[BuGS]

From what I have heard, The BPT GTR Intake Manifold is the one you want. Not the stock BP one. But then again I am not for sure either. All 2nd hand knowledge here too...

[OsoSlo z28]

like was stated, the gt-r intake manifold is the better option over the 2 piece bp one.

what you were told was someone's misguided attempt to remember the facts.

the bp HEAD flows a lot more than the bpt head, which will net you some extra ponies.

[torpedan]

The BPT GTX and GTR intake manifolds appear identical. the Exsaust manifold on the other hand is a diffrent story. They are very diffrent.

You can swap a BPD head and gain a significant power boost. The GTX head was desinged to be ported to all hells end and has quite a bit of material there that restsicsts the airflow. Just its much easier to do a modest cleanup on a BPD head to get the same end result.

<small>[ September 17, 2004, 01:19 PM: Message edited by: torpedan ]</small>

[OsoSlo z28]

Originally posted by torpedan:
The BPT GTX and GTR intake manifolds appear identical.

They are different.

[Marlon]

it;s a tuned intake manifold
mazda spent alot of time on the gtr intake manifold cause there was a problem with the 1st cyc running lean
well thats what i've heard
when i get my car on the dyno we'll see how much more hp the na bp head and gtr intake manifold on a gtx turbo get me over a modded gtx
i would like 2 see 235 whp at 14 psi

<small>[ September 17, 2004, 04:22 PM: Message edited by: Marlon ]</small>

[OsoSlo z28]

you should see some pretty good gains considering the higher CR and better flowing head/intake. the only thing holding you back is the turbo itself. unless you have a wicked i/c setup, it's going to get heat soaked pretty quick. upper rpm's, the turbo is a bottleneck.

[Marlon]

i think my intercooler is big enough
<img src="http://memimage.cardomain.net/member_im ... 4_full.jpg" alt=" - " />

i think the core is 25x7x3
kinda big i was gonna got with a t3 turbo but i'll be happy with the output of the gtx turbo i think

[BuGS]

I really want to see those Dyno Sheets. If the GTR Mani is better then i want toget one from corksport as soon as i can....

[torpedan]

The last person who i talked to who had in his hands both a GTR and GTX intake maifold said they were the same. I can go get pictures if you really would like but the guy is a reputable tuner for his area.

As i understood the GTX had a problem with #3 runnign lean(this is also evident from my teardown of this engine) and the exsaust manifold was changed on the GTR to fix this.

[Gro Harlem]

I think there were some people dyno'ing the differences on http://clubprotege.com

From what I understand, using the stock BP manifold AND removing the VICS is better than using the GTR manifold. THe only thing worth noting is that you should port the stock BP manifold so it is port matched with the head.

Also, i'm sure you all know this, but using the NA BP head is also an "upgrade" from the stock GTX garbage head that has VERY restrictive intake ports. I wish I had the picture comparison on hand, but those are also somewhere on http://clubprotege.com

The GTR manifold appears to be the same as the GTX on the outside, but inside it is tuned differently. I forgot the details but I believe it is ported and has some kind of funneling effect to "even out" the flow to each cylinder like earlier mentioned. Dunno how they did it but there was an article in some New Zealand-based tuner magazine I was reading at Borders last year that talked about the "Sunny GTiR VS Mazda GTR".

[jaydog5678]

Originally posted by David Coleman:

I remembered this one from Dave awhile back.

[torpedan]

Originally posted by Gro Harlem:
I think there were some people dyno'ing the differences on http://clubprotege.com

From what I understand, using the stock BP manifold AND removing the VICS is better than using the GTR manifold. THe only thing worth noting is that you should port the stock BP manifold so it is port matched with the head.

Also, i'm sure you all know this, but using the NA BP head is also an "upgrade" from the stock GTX garbage head that has VERY restrictive intake ports. I wish I had the picture comparison on hand, but those are also somewhere on http://clubprotege.com

The GTR manifold appears to be the same as the GTX on the outside, but inside it is tuned differently. I forgot the details but I believe it is ported and has some kind of funneling effect to "even out" the flow to each cylinder like earlier mentioned. Dunno how they did it but there was an article in some New Zealand-based tuner magazine I was reading at Borders last year that talked about the "Sunny GTiR VS Mazda GTR".

Yeah I suspected that on a flow bench it would show more than from just looking and trying to measure. Given the areas that are diffrent are inside in the manifold out of site.

The BP intake will flow more but for a low boost setup the GTX should lag less. So more of its a tradeoff for what your looking for.

If your going for all out power you can find ITB's on ebay from time to time as well.

[nolig2278]

happy to reopen an old thread and hope for some good info.

i have my bpt apart after 7 yrs of use. i am going to swap out the bpt 26 head for a bp 05. what i would like to confirm is that i should still use my bpt valves and cams. i would imagine that the cams have different timing from the bp cams.

Thanks

[Dark_Rider2k3]

The last person who i talked to who had in his hands both a GTR and GTX intake maifold said they were the same. I can go get pictures if you really would like but the guy is a reputable tuner for his area.

As i understood the GTX had a problem with #3 runnign lean(this is also evident from my teardown of this engine) and the exsaust manifold was changed on the GTR to fix this.

Interesting story.. my JDM BP had the same thing. When I disassembled the motor I noticed #3 had been running lean. And this is on a BP-D.. not the turbo one (though this engine was still JDM).