1.8 Turbo?

[Pimp_Nastae]

i was wondering if anyone made a turbo kit for a 1.8 DOHC?

[Shane5425]

anything for the 2.0l will bolt on ur engine...

[Pimp_Nastae]

in saying that if i got a 2.0 turbo kit would i need a new impeller in the turbo or anything mod-wise?

[Shane5425]

2.0l kit will bolt on, the only differance in the engine is that the 2.0l is stroked more.. the 2.0l and 1.8l are essentially the same motor.....

[Pimp_Nastae]

what i heard is that if you use a 2.0 turbo on a 1.8 you'll get turbo lag...

[wicked]

it's only a .2 liter difference,and the turbo's chosen for ALL the kits(excluding MAMs GT28,and GT30 kits) are chosen to flow at early RPM ranges.

[Shane5425]

u wont get any lag, it will be a slightly differant power curve, but essentially it will run the same...

what i heard is that if you use a 2.0 turbo on a 1.8 you'll get turbo lag...

[ANTIXPRO]

What about a 1.8 automatic? Can an automaic handle any type of boost?

[Shane5425]

6psi max safe..

[flyin_by]

Could a msp ecu be swapped out for the stock one if I was to get a full msp kit? Or will the ignition not like that?

[morkys]

Doesn't the MSP 2.0 setup use lower compression pistons/cylinders to avoid detonation under boost? Or is that old school turbo?

[Kansei]

The MSP 2.0 is the same engine as all other 2.0 Proteges. Different ECU, but same rods, pistons, cams, etc.

oh and WELCOME TO THE FORUMS! I should name myself president of the official mazda forums welcoming crew :D

[sephiroth]

6psi max safe..
for sport-auto's.

the 1.8L is just using a straight auto tranny... so any psi is going to fry the auto tranny fairly quickly (since at least with the sport you can let off the gas when switching gears.. you'd have to guess when the tranny is about to change gears I guess in the straight auto)


let me put it this way... before I'm getting a turbo for my 1.8L auto, I'm swapping the auto for a manual (ughdance)

2.0l kit will bolt on, the only differance in the engine is that the 2.0l is stroked more.. the 2.0l and 1.8l are essentially the same motor.....
QFT

[Kansei]

^^ Mark (BazookaJoe) has a turbo auto 2.0.. with the "straight auto tranny", not the "sport" automatic (lol @ sport automatic). Last I checked he hasn't had any tranny problems, you just gotta keep the boost low.

[Shane5425]

i have an auto tranny with 7psi, it chirps the tires from 1st to 2nd, i do let off a bit when it goes to shift, but its going like a champ....

[sephiroth]

^^ Mark (BazookaJoe) has a turbo auto 2.0.. with the "straight auto tranny", not the "sport" automatic (lol @ sport automatic). Last I checked he hasn't had any tranny problems, you just gotta keep the boost low.
yeah, but regardless, even at low boost it's going to reduce the life of the tranny no matter how you look at it.

I have an auto tranny with 7psi, it chirps the tires from 1st to 2nd, i do let off a bit when it goes to shift, but its going like a champ....
really? wow, I thought you had a manual (peep)

[turbo fs-2.0]

Here's my question can I swap everything from my existing Mazdaspeed FS-DE 2.0 motor, turbo-manifold, harness, ecu ect on a FP-DE 1.8 without a problem? or the motor will run like crap?

[sephiroth]

Here's my question can I swap everything from my existing Mazdaspeed FS-DE 2.0 motor, turbo-manifold, harness, ecu ect on a FP-DE 1.8 without a problem? or the motor will run like crap?
the 1.8L is the exact same as a 2.0L, the only difference is it's bore and stroke. Thus, any bolt on that works with the 2.0L, works with the 1.8L

[Shane5425]

the 1.8L is the exact same as a 2.0L, the only difference is it's bore and stroke. Thus, any bolt on that works with the 2.0L, works with the 1.8L

except for internal parts in the block, someone tried to convert the 1.8l block with 2.0l internals, idnt work..

[sephiroth]

except for internal parts in the block, someone tried to convert the 1.8l block with 2.0l internals, idnt work..
someone tried to take a 2.0L longblock's internals and put them into a 1.8L longblock?.. the different displacement didn't give a clue that they wouldn't fit? (poke)

if you want to get very specific, stuff like the valvetrain and valve headder are different, but nothing he had was anything that wouldn't fit on the 1.8L.

[Shane5425]

someone tried to take a 2.0L longblock's internals and put them into a 1.8L longblock?.. the different displacement didn't give a clue that they wouldn't fit? (poke)

if you want to get very specific, stuff like the valvetrain and valve headder are different, but nothing he had was anything that wouldn't fit on the 1.8L.

well, the hype was on the boards at that time, that the internals would fit, but the pistons hit a part on th lower block..

[sephiroth]

well, the hype was on the boards at that time, that the internals would fit, but the pistons hit a part on th lower block..
ahhhh, I see.

[turbo fs-2.0]

Well looks like it will work then? I heard that the FP-1.8 is better for force induction rather than the FS-DE 2.0 ,that i got on my Mazdaspeed. Correct me if I'm wrong. I just want to make 100% sure that this engine will work on my Mazdaspeed with no problems,what do you guys think?

[turbo fs-2.0]

What about the exhaust turbo manifold for the mazdaspeed,will be a few inches longer? I heard that the FP-DE block is shorter than the FS-DE? I just want to make sure that my turbo set up on my 2003.5 will bolt straigh up to the FS-DE 1.8 ,before buying the engine!

[Shane5425]

it will bolt on to it.. theoutside is the same.. i am interested in seeing the outcome of a 1.8l Turbo..

[Shane5425]

ps, i would put the mazda speed 2.0l head on the 1.8l block... if i remember right, doesnt the speed have differant cams?

[sephiroth]

ps, i would put the mazda speed 2.0l head on the 1.8l block... if i remember right, doesnt the speed have differant cams?
I'm pretty sure the cams are the same, but don't quote me that.

[Shane5425]

like i said , i could be wrong too ..

[turbo fs-2.0]

No!! the cams are different at least the intake one, I just spoke to Ken from protegegarage and he said that it might not run right,because of the PCM is for the FS-DE 2.0 not for the FP-DE. Also the exhaust mani will probably sit lower and thus push down the J-midpipe on the car! The FP-DE has a shorter block Let me know what do you guys think?

[Shane5425]

all we can say is that there is only one way to find out...

[turbo fs-2.0]

what's that?

[sephiroth]

No!! the cams are different at least the intake one, I just spoke to Ken from protegegarage and he said that it might not run right,because of the PCM is for the FS-DE 2.0 not for the FP-DE. Also the exhaust mani will probably sit lower and thus push down the J-midpipe on the car! The FP-DE has a shorter block Let me know what do you guys think?
my OBX headder fits without having to bend the mid-pipe on my 1.8L. If the 1.8L has a shorter block, it's defentaly not noticably shorter.

[turbo fs-2.0]

my OBX headder fits without having to bend the mid-pipe on my 1.8L. If the 1.8L has a shorter block, it's defentaly not noticably shorter.
I was thinking the same! , that the lenght on the block will not be a big deal butthe thing is I want to make 100% sure that it will work.Ken told me that is not going to run properly due to the fact that the setup on the MSP is for the 2.0 FS-DE Now if you turbo a 1.8 with a stand alone ECU or it's factory ECU It might work right! again correct me if I'm wrong?

[sephiroth]

I was thinking the same! , that the lenght on the block will not be a big deal butthe thing is I want to make 100% sure that it will work.Ken told me that is not going to run properly due to the fact that the setup on the MSP is for the 2.0 FS-DE Now if you turbo a 1.8 with a stand alone ECU or it's factory ECU It might work right! again correct me if I'm wrong?
the factory 1.8L ECU will starve the engine of fuel, there's no way you'd get it to work right with any psi.

[turbo fs-2.0]

the factory 1.8L ECU will starve the engine of fuel, there's no way you'd get it to work right with any psi.
So the MSP PCM will work ok? because they run rich as hell!

[Shane5425]

what's that?

put it in and see what happens when you turn the key.. lol

[turbo fs-2.0]

put it in and see what happens when you turn the key.. lol
That's the thing I just ask you guys if it was done before or if Is going to work before I buy the engine? I just dont't want to buy the motor do the swap and find the hard way that it doesn't work! Well let me know

[wwpms6]

i don't think anyone on these forums have ever done this swap. i could be wrong though. i know someone on here is swapping a 2.0 short block in place of his 1.8, but thats because he bought forged internals and they didn't fit his block.

the 1.8 might be better for boost, but i don't think it is that much better. not like its going to hold a lot more boost, i could be wrong though. if you plan on boosting more why not just go forged?

[sephiroth]

i don't think anyone on these forums have ever done this swap. i could be wrong though. i know someone on here is swapping a 2.0 short block in place of his 1.8, but thats because he bought forged internals and they didn't fit his block.

the 1.8 might be better for boost, but i don't think it is that much better. not like its going to hold a lot more boost, i could be wrong though. if you plan on boosting more why not just go forged?
1.8L should be good up to 16-19psi. I guess a good situation would be if you found a cheap 1.8L junker that had a relatively good shape engine for about $800, since that would be just a little bit better than a 2.0L, and dosen't come with the 3.5-4K$ completly forged block price. people talk about the 1.8L making up for the HP loss with more boost, but the 1.8L puts out 122BHP compared to the 2.0L's 130BHP, that's really not anything noticable anyway imo.

[turbo fs-2.0]

No!!! boost will remain stock!!!! ,the 1.8 swap is because i can get the JDM engine for $550 (my price) is super clean! and that's the only one that my supplier has for now! What I really need is clean low milleage FS-DE 2.0 but the only ones available are the older ones with distributor and don't have the knock sensor! I'm not trying to swap the motor because the 1.8 is better is because mine 2.0 is making metal due to a bearing failure!!

[turbo fs-2.0]

Spoke to Juan at Hiboost and Ken from Protege Garage and both of them told me that the stock Mazdaspeed set up is not compatible with the FS-DE 1.8 . It will NOT!!!! run right!

[sephiroth]

Spoke to Juan at Hiboost and Ken from Protege Garage and both of them told me that the stock Mazdaspeed set up is not compatible with the FS-DE 1.8 . It will NOT!!!! run right!
no, it won't, not with the stock ecu.. (poke)

[turbo fs-2.0]

no, it won't, not with the stock ecu..[/I] (poke)
Yup!!! you will need a stand alone ecu anyway!! is not worth it!! I'm in the proccess to get another FS-DE 2.0 that I'm going to re-build! from top to bottom!!!

[jimmybrite]

people talk about the 1.8L making up for the HP loss with more boost, but the 1.8L puts out 122BHP compared to the 2.0L's 130BHP, that's really not anything noticable anyway imo.
I heard that the 1.8L DOHC is a little more nervous than the 2.0 dohc, like they underestimated the 1.8L hp's and overestimated the 2.0L hp's. I used to have a 1990 1.8L SOHC protege and I found it to be pretty nervous indeed, even for a single cam

[turbo fs-2.0]

Yup the 1.8 revs faster and has a higher red line than the 2.0!