MX3 1.6L I4 to 626 2.5L I4

[Murdastylez15]

I was just sitting around thinking about the possible engine swap I want to get done by the end of the year. I want to push some incredible power. My friend drives a 240 with a T25 and it pisses me off because he told me (in my face that now matter what I did with the 1.8L BP that I would still not come close to beating his 10 sec 240. He has 359 WHP. I want to beat that one day. So....how much work would it be if I relocated my battery to the rear, to swap my 1.6L to the 2.5 liter I4 that comes in the 626? I got the money and definitely have the time with no job to get this done. What do ya think?

ManNinco15 = gamertag

[umcamara]

[Inodoro Pereyra]

I may be wrong, but, to my knowledge, the 626 never came with a 2.5 L I4. It came with 2.0, 2.2 and 2.3 L I4, and with the 2.5 V6 (the KL-DE) and 3.0 V6.
Anyways, I know some members here have gotten some impressive numbers turbocharging their BPs. Take a look at the worklogs. Maybe you can find something that suits your needs.

[RS_OBD'oh_2]

T25? Weak.
It's not about total power... It's about power to weight,traction and driver skill. I believe Mi|<e told me he'd like to see 300 plus.. maybe 350.
I don't know the 240's all that well, but I would think it would require more than 359whp to make it into the 10's. I could be totally wrong. Most evo 8's out there in the 10's have about 400+hp and some serious traction advantages over a 240.

[solo_ryder]

This is a contender for thread of the year.

Never seen a car with a t25 running 10's..

[RS_OBD'oh_2]

Ya dude.. did some searching. Either he has a different turbo or he's full of sh!t.

Being that I KNOW a T25 is a small turbo, I thought I'd looks up some specs... Garretts GT25 (bigger than a T25) is rated at a max for 330HP (now WHP)
Here are the specs right from the 240 forums. By the looks of the 240 forums... he might be adding 100hp.

359whp should translate to ~413 at the flywheel. That's one magical T25.

[Flyer]

This is a contender for thread of the year.

Never seen a car with a t25 running 10's..

Now that's not necessarily true...there are some I4 engines out there that could run 10's with a T25...although the only one that comes to mind is the Ariel Atom...

[Inodoro Pereyra]

... the Ariel Atom...

[Murdastylez15]

the 626 never came with a 2.5 L I4. It came with 2.0, 2.2 and 2.3 L I4

OMG, I screwed up, you're right. lol At the time I was looking through the possible I4's I looked at the 2.5L I4 from the Mazda B2300 haha, as crazy as it sounds, I would like to have that engine if it would fit, I mean it should right?

[Inodoro Pereyra]

I don't want to make you feel bad, but the B 2300 didn't come with a 2.5 L either.
The B 2500 ('98-'01) came with an ohv 2.5 I4.

That said, mazda I4 engines have iron blocks, which means that, even if it fits, I'm pretty sure it'd be way too heavy for the MX3.

[RS_OBD'oh_2]

Wow, really? Sure, any 4 cyl mazda engine will fit in any 4 cyl engine bay. Who cares about the rear wheel drive, 4x4, Clearly OBD1 VS. 2.... inverted ferkin.... Whatever.

Don't forget to call your friend out, no T25 will do what he claims. I pooped a T25 once.. didn't even need to flush.

Oh wait... does your buddy run a 1/8 mile or 1/4?

[Inodoro Pereyra]

I don't want to make you feel bad, but the B 2300 didn't come with a 2.5 L either.
The B 2500 ('98-'01) came with an ohv 2.5 I4.

That said, mazda I4 engines have iron blocks, which means that, even if it fits, I'm pretty sure it'd be way too heavy for the MX3.

Wow, really? Sure, any 4 cyl mazda engine will fit in any 4 cyl engine bay. Who cares about the rear wheel drive, 4x4, Clearly OBD1 VS. 2.... inverted ferkin.... Whatever.

Whoa...take it easy...
I never said the engine would fit. I don't know if it does.

[Redline322]

I know a B2200 motor will fit into a festiva so it shouldnt be much of a stretch for a 2.3 or 2.5, but it would make it alot easier to stick with obd1. As far as I know, any B series motor will bolt up to a B series trans because all he had to do was swap over the harness, ecu, and notch a section of frame to clear the pulleys. That being said though, those motors are not built for boost, while the BP is and you can get a BP over 350 hp, but then you need to start worrying about the trans and axles more and it's not exactly easy. A 60 trim T3 running around 20psi and built internals should give the 240 a run for it's money. Mind you I have a friend with an RB25 swapped 240 and he runs 12s with slicks in the 1/4 mile so I call bs on your friend.

[RS_OBD'oh_2]

Hmm.. musta quoted the wrong guy.. damn. Sorry dude. I'll fix it

[Mi|<E]

Max boost from T25 is 15 psi , anything over it goes boom

240 SX curb weight 2700 lb + 1 person 2870 lbs assuming 170 lb person

Calculated horsepower for a 10 second run at 2870 lbs is 567 to the wheels.

So hes running a built RB26 or RB30 inline 6 with a T3 or larger turbo

OR he isnt and is full of crap and is running a 13.2 second 1/4 mile
assuming about 250 ish horsepower at 13 psi on the T25 which is
just asking for an explosion of broken stuff


Now a loaded MX-3 is about 2450 lbs and to run a more realistic but still fast 11.5
quarter mile the required horsepower is about 320

for a 10 second in our cars you need about 480 horses at the wheels