Miata Turbo Forum - Boost cars, acquire cats. - diy "turbo no hit block" '00 BP miata

- DIY Turbo Discussion (https://www.miataturbo.net/diy-turbo-discussion-14/)

- - diy "turbo no hit block" '00 BP miata (https://www.miataturbo.net/diy-turbo-discussion-14/diy-turbo-no-hit-block-00-bp-miata-79849/)

https://www.miataturbo.net/attachmen...ine=1461530112

Will that hose rip off when the engine torques under load?

nope, it is flexible enough, I mean, it's working so far

Quote:

Originally Posted by DNA54 (Post 1326292)

nope, it is flexible enough, I mean, it's working so far

We looked at that briefly but decided against it. On an aftermarket engine mount it's probably OK. On stock mounts, no way. We have a prototype extension hose that routes the PS hose around the back of the oil drain and then back forward to maintain the flexibility needed in that hose.

For the ic coupler, we are using a 60deg bend that fires straight down next to the ac compressor, but yours works too. It's definitely tight in there but doable.

Oh, I forgot to say, since I'm using the internal 250 kPa map sensor I've turn the boost down to 200kPa because stayin at 245 makes it hit boost cut with the colder air.
Well, I turned down to 180kPa and it's creeping at 250+ after 6000rpm anyway, what the...?
I've got the medium boost actuator set to 8 turns of preload, the manual says it's around 10psi, so ok, it's 10 psi, but the creep is real.

Anyone experienced this? I cannot drive on track with that kind of power, it's too much

Oh, a 4 bar map sensor is on the to-do list:eggplant:

yep, the cause of the creep was just... me
the preload was 14 turns, instead of maximum of 7, the wastegate was simply... close :noob:

oh, and I can reach 18psi at 3200rpm :jerkit:

14 half turns :)

My instinctive logic told me pulling out the spring, by preloading, would 'help' the boost-preassure push open the wastegate. your kind of pulling it towards opening the wastegate

pic from turbosmart.com

but looking at the physics:
Newtons III. law

F= Pressure * Area = Hooks Law = konstant * x (spring displacement)

increasing preload = increasing x ==> must leads to an increase in Pressure to overcome equilibrium

qed

Quote:

Originally Posted by omnia (Post 1326519)

14 half turns :)

My instinctive logic told me pulling out the spring, by preloading, would 'help' the boost-preassure push open the wastegate. your kind of pulling it towards opening the wastegate

Precisely, I just drove the car with 5 mm of preload and the wastegate boost is 150kPa, and I'm using 5% less of gasoline compared to the gt2560 at 220kPa :giggle:

https://www.miataturbo.net/attachmen...ine=1461610950

https://www.miataturbo.net/attachmen...ine=1461610950

https://www.miataturbo.net/attachmen...ine=1461610950

https://www.miataturbo.net/attachmen...ine=1461610950

https://www.miataturbo.net/attachmen...ine=1461610950

https://www.miataturbo.net/attachmen...ine=1461610950

https://www.miataturbo.net/attachmen...ine=1461610950

I have been thinking about putting my new breather can in that same location.

just here giving cats.

:inout:

Quote:

Originally Posted by sixshooter (Post 1326614)

I have been thinking about putting my new breather can in that same location.

It fits very well, dimensions are 3" (I used part of the exhaust) x 4" x 3"

Yesterday I decided 220 kpa was not enough for... well scare me again, so I've made my first pcb using eagle :party:

https://www.miataturbo.net/attachmen...ine=1461936099

https://www.miataturbo.net/attachmen...ine=1461936099

https://www.miataturbo.net/attachmen...ine=1461936099

I'm using the 12v supply for the wideband, analog GND for reference and the external map pin for the reverant ms2, oh and it's a 400kPa sensor :eek5:
tomorrow I will find out what 260 kPa seems like on a efr 6758 :giggle:

Today I didn't had time to install the 4 bar map sensor, but I tuned ve table for lpg on wastegate and it's making over 200whp, I'm very happy with the result

https://www.miataturbo.net/attachmen...ine=1462053422

Why didn't you just swap the on board sensor out for the 3.5bar drop in one for like $10?

this 4 bar sensor is a drop in replacement for the 2.5 bar I have, but I don't know if I can change the values for the internal one

Quote:

Originally Posted by DNA54 (Post 1327663)

so I've made my first pcb using eagle :party:

I've been trying to teach myself to use eagle lately and it has made me a sad panda.

LPG, like, propane? wat?

Quote:

Originally Posted by Savington (Post 1328245)

LPG, like, propane? wat?

precisely
I think is the fastest lpg miata in sardinia :giggle: