Built on progress still working on

[Fcaba]

Small build still in progress.
Wiseco 88mm
Manley rods
Gt-3071 ewg
Oil cooler
Bsd
4" Cpe inlet
Arp main stud
Cpe inyector seals


Any advice is welcome

[sheston]

My advice is to have fun - looks like you're already headed that direction.

Has some in common with my build, but I wouldn't call it a small build. I didn't even do a turbo, and thought it was BIG

Doing it yourself? Back story on why? Having the block machined? Intercooler upgrade? Extra cooling? What are your goals?

[Fcaba]

Originally Posted by sheston My advice is to have fun - looks like you're already headed that direction. Has some in common with my build, but I wouldn't call it a small build. I didn't even do a turbo, and thought it was BIG Doing it yourself? Back story on why? Having the block machined? Intercooler upgrade? Extra cooling? What are your goals?

Thanks
The main reason for this build is refreshing the engine, it all ready have 200k+ miles, and just having fun in the process, learn how this platform work and beat my subaru's brother

The engine gone be inspected on the machine shop (here in Dominican Republic) measure and balanced locally.

I have fmic and aem meth kit.
I don't have any goals on mind but I will happy if I reach the 400 420 whp.
The tune I hope is goin to be with a tunner from PR.

[impossible]

My neighbor that I grew up with was from DR, awesome seeing some Speed peeps out there. Best of luck man

[Fcaba]

Originally Posted by impossible My neighbor that I grew up with was from DR, awesome seeing some Speed peeps out there. Best of luck man

Thanks bro... yes actually we are 10 Mazdaspeed and a few others on the way.

Say hello to your neighbor and tell him
están vestidas de novia... (he will understand )

[mituc]

You should consider leaving the balance shaft in place especially if you're continue to use your car as a DD. Vibrations tend to tear everything apart, on a DD starting with the main bearings.

[Fcaba]

Originally Posted by mituc You should consider leaving the balance shaft in place especially if you're continue to use your car as a DD. Vibrations tend to tear everything apart, on a DD starting with the main bearings.

Thanks mituc
In the beginning that was the plan leave the bs but I start to read about the oil starving on this platform and I get a little scare, and I read in some post about use arp main stud they aren't to friendly with the bs, really i want to leave the bs.
I'm still buying parts and planning process.

[impossible]

Originally Posted by mituc You should consider leaving the balance shaft in place especially if you're continue to use your car as a DD. Vibrations tend to tear everything apart, on a DD starting with the main bearings.

Word, show us proof of this happening on a MZR L3VDT and not just theory on paper. That whole Jacks trans bs about harmonics has been debunked by many other builders in the 4g63t community as well so don't bother using that as a source lol.

[Fcaba]

Originally Posted by impossible Word, show us proof of this happening on a MZR L3VDT and not just theory on paper. That whole Jacks trans bs about harmonics has been debunked by many other builders in the 4g63t community as well so don't bother using that as a source lol.

What you mean by that?

[impossible]

Someone always comes with unfounded shit cons about deleting the mzr/duratec balance shaft

[Fcaba]

Originally Posted by impossible Someone always comes with unfounded shit cons about deleting the mzr/duratec balance shaft

Oh. So you support the bsd?
Why? (Noobie question) don't think I'm fooling you
Please explain me your point

[mituc]

Originally Posted by Fcaba Thanks mituc In the beginning that was the plan leave the bs but I start to read about the oil starving on this platform and I get a little scare, and I read in some post about use arp main stud they aren't to friendly with the bs, really i want to leave the bs. I'm still buying parts and planning process.

If you track your car (autocross or circuit racing with semislicks) then an oil baffle helps a lot mitigating this issue, and unfortunately an oil baffle can fit in the oil pan only if you deleted the BS.
A street tire may push the lateral Gs well above 1 in some situations but in street scenarios that will simply not happen for enough time or at all.
That is the reason I said to keep the BS "if you're going to DD the car". If you only race it then it will not see enough miles in its lifetime to develop any problem because of that (it will have other issues well before that).

For the main studs you should use OEMs. For the head bolts you can go with either OEM if you don't aim past 400-450hp or go with L19 or CA 625+ studs if you want more than 400-ish HP.

Originally Posted by impossible Word, show us proof of this happening on a MZR L3VDT and not just theory on paper. That whole Jacks trans bs about harmonics has been debunked by many other builders in the 4g63t community as well so don't bother using that as a source lol.

I didn't have the opportunity to see this happening on my car, I only saw it on two massmurderwagens TSI (one heavily modified GTI and one heavily modified CupraR, both making around crank 400hp and using single mass FWs and relatively stiff clutches).
The thing is that once you remove the balance shaft all those hits from the transmission will hit the crankshaft which has only its bearings to absorb those hits (and the rods+pistons up to some point).
Also, the natural imbalance of the inline 4 engine produces continuous vibrations which again will be absorbed by the clutch (that is you have a soft enough clutch or a dual-mass FW and main bearings.

I'm not familiar with that the Mitsubishi EVO platform builders discovered, but those engines have a lot less stroke than ours therefore a lot less torque at the same power levels. So also less vibrations at the same rotation speed. So things may be a bit different. Not by much, but probably enough not to overcome the tensile strength of these parts in some extreme situations.
Until I see a crankshaft pulled after, say, 60k miles from an engine with a deleted BS I'm not sure I can think against what I already know and is on par with common sense.

[shaneski]

Originally Posted by Fcaba Thanks mituc In the beginning that was the plan leave the bs but I start to read about the oil starving on this platform and I get a little scare, and I read in some post about use arp main stud they aren't to friendly with the bs, really i want to leave the bs. I'm still buying parts and planning process.

You can trim the ARP mains so they fit with the Balance Shaft

[Mazdazilla6]

There is no harm that can come from removing a balance shaft. The company I work for has done EXTENSIVE balance shaft testing for multiple designs of balance shafts on all different displacement engines and all the data I've looked at from testing (1000s of hours of run time) shows there's no gain to be had with a balance shaft except for NVH purposes. If there was any benefit to be had in terms of longevity, EVERY OE would have balance shafts on all of their 4 cyl engines. But they don't, lots of them don't.

If you're seeing issues with your bearings, chances are you're not running a heavy enough oil. Lots of people build their engines and for some reason think it's okay to run factory weight oils. The lightest oil I would run on a built engine is a 40 weight oil and that would only be if clearances were set on the tight side.

[sheston]

I kind of smile every time I read NVH associated with BS delete. I couldn't tell any difference when I did mine. If you want NVH, Lite flywheel, 6 puck, stiffest 3 engine mounts, .... I wish I could tell the BS was deleted :-)

[Fcaba]

Originally Posted by Fcaba Small build still in progress. Wiseco 88mm Manley rods Gt-3071 ewg Oil cooler Bsd 4" Cpe inlet Arp main stud Cpe inyector seals Any advice is welcome

The built has begun