How do I get my stock 7MGTE to 350 WHP?

[CajunKenny]

Ok. Here is the question.

How do I get my stock mkiii to put 350 hp to the ground? What have you guys done and what works the best? Right now the engine is out and stripped. The bare block is sitting on the stand.

Tell me where to start to achieve the magic 350 hp!!!!:aigo:

 

[TurboFreak]

Upgraded CT26, 550cc injectors, some type of AF management(SAFC), turbo-back exhaust, intake, Walbro fuel pump, FPR, Lexus AFM or MAFT Pro(if MAFT Pro then no SAFC), WB 02 sensor, MHG, ARP studs, Boost controller...

350hp is kinda of that HP that is in between "stages". You will need all that above to attain 350 BUT with all that above you can easily/safely get 400 just by raising the boost a little... Get what im saying?
Lemme know if you need some of those things explained. I'm sure many more will chime in as well.

With stock turbo, stock fuel, DDP, 3" exhaust, intake, and boost controller. you'll almost be to 300hp. Just for reference.

 

[need new tires]

upgraded ct(57,60 trims work fine), full 3" elbow back, 550's or rebuilt 440's, afpr, maft-pro, fmic and 2.5" hard pipes, wideband(lc-1, aem, fjo, ect..), 255 pump,MHG and arps.

and call it a day. now 5sp will need a upgrade clutch for it to last, auto should have shims and a good trans cooler.

 

[IwantMKIII]

Ok. Here is the question.

How do I get my stock mkiii to put 350 hp to the ground? What have you guys done and what works the best? Right now the engine is out and stripped. The bare block is sitting on the stand.

Tell me where to start to achieve the magic 350 hp!!!!:aigo:

look at my sig and start from there....minus the EGR removal. I'm dead even with lightly modded C5 corvette's on 11-12lbs untuned on a stock ct if that gives you any idea of what it can do

 

[CajunKenny]

look at my sig and start from there....minus the EGR removal. I'm dead even with lightly modded C5 corvette's on 11-12lbs untuned on a stock ct if that gives you any idea of what it can do

My turbo has front to back and side to side shaft play. Is death on the horizon?

 

[MassSupra89]

Good time to get it rebuilt, and upgraded.
Get you're stock injectors cleaned, pick up a Maft-Pro, full 3" exhaust, and all the supporting mods mentioned before and you'll be able to meet your goal.

 

[IJ.]

^ Before it lets go and trashes the motor.

 

[CajunKenny]

Good time to get it rebuilt, and upgraded.
Get you're stock injectors cleaned, pick up a Maft-Pro, full 3" exhaust, and all the supporting mods mentioned before and you'll be able to meet your goal.

I have a 3" system from the back of the turbo back. (including the elbow) It's already built and on my garage floor.

Who's the best online store to buy the Maft-Pro from?

 

[need new tires]

^pm DrJones on this forum. he is a distributor of maft-pro products.

 

[2543arvin]

Ok. Here is the question.

How do I get my stock mkiii to put 350 hp to the ground? What have you guys done and what works the best? Right now the engine is out and stripped. The bare block is sitting on the stand.

Tell me where to start to achieve the magic 350 hp!!!!:aigo:

I dynoed just over that, so if youre interested you can PM me your number and I can explain everything a little better for you possibly....

But as turbofreak already stated, its a power figure in between stages and there are some things you could do but not necessarily have to do to get away with it. Just depends on if you will want more power after that, as most do.

 

[MassSupra89]

^ Before it lets go and trashes the motor.

Well of course MHG and ARP studs is a given. Besides when it let's go, it's an excuse to tear down and go for more horsepower:naughty:

 

[CajunKenny]

Well of course MHG and ARP studs is a given. Besides when it let's go, it's an excuse to tear down and go for more horsepower:naughty:

Oh yeah! I have a set of new ARP Head Studs on the bench ready to clamp the head down on an MHG.

I was considering an HKS 1.2mm. Any suggestions on that? (I guess that's a whole other discussion there isn't it!) I hear of a lot of folks going with the cometica one.

 

[TurboFreak]

Cometic is good. I had it on my old supra. Its more forgiving than other metal head gaskets. The MM of the HG depends on if you need the head or block machined (which you need to check).

 

[pimptrizkit]

Cometic is good. I had it on my old supra. Its more forgiving than other metal head gaskets. The MM of the HG depends on if you need the head or block machined (which you need to check).

errrr.. please machine both block and head it's required for a good seal. 25ra or better
and most mhg do a fine job, i use titian


doesn't depend on weather the head or block is machined, because both need to,. the size depends on the combined total of removed material,

say .03 from deck and .02 from head =.05 and you'll be safe running the 1.5mm and retain stock compression ratio.

not to mention, it's easy to over look the fact the block is warped,

i had a straight edge on mine and after about ten minutes of loking with a light i thought i was done, well turned out i wasn't it was warped inbetween the cylinders and my mhg would not seal under boost.



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as far as making good power,

i made 324whp 317wtrq @13psi on a stock ct26. it peaked at 13.7 and feel of to high twevles through out most of the run. i ran out of fuel since pump was going out, but im sure with the right mod's and proper tunning 340 can be achived on a stock ct@15psi on a cold day.

 

[TargaMK3Turbo]

I have 550cc injectors, full turbo back 3" exhaust, intake, intercooler kit, mbc, SAFC 2, MHG, ARP studs, a TRD clutch and Fidanza flywheel, wideband, walbro 255, afpr. I feel all of this on the bone stock engine and turbo can hit over 300whp with a good tune.

Just basic mods. I was told it's ALL in the tune.

I'm not a very big fan of the upgrated CT's to be honest. When it comes to turbo's, I'd go with something like a SP61GT, it's a great turbo and it has proven that.

 

[gixxer750]

It can be done with a stock turbo for cheap if you are rebuilding the engine.

This is a completely different route from what most would suggest, but I've been there, and the car this is in has been running like this for 25k miles just fine.

N/A pistons in turbo motor, Na intake cam, ported cylinder head, MHG, ARP head studs. You will need a full 3" exhaust(turbo back), and an intake. My white package automatic supra puts down 346 no problem at 11 psi on stock management, stock fuel cut, and a bunch of other stock stuff. Due to the higher compression, it comes on boost faster, and is stronger off boost too. The N/A intake cam moves the entire powerband down in the rpm range slightly and makes the car extremely quick with a broad powerband.

This is a very cheap route to go if that is all the power you need and don't want more from this engine in the future. It works well, and uses all toyota parts minus the intake and exhaust.

I'm sure I'll get flamed for it, but hey... for under a grand my white package auto does 12.51 in the quarter and is dead reliable.

 

[TargaMK3Turbo]

It can be done with a stock turbo for cheap if you are rebuilding the engine.

This is a completely different route from what most would suggest, but I've been there, and the car this is in has been running like this for 25k miles just fine.

N/A pistons in turbo motor, Na intake cam, ported cylinder head, MHG, ARP head studs. You will need a full 3" exhaust(turbo back), and an intake. My white package automatic supra puts down 346 no problem at 11 psi on stock management, stock fuel cut, and a bunch of other stock stuff. Due to the higher compression, it comes on boost faster, and is stronger off boost too. The N/A intake cam moves the entire powerband down in the rpm range slightly and makes the car extremely quick with a broad powerband.

This is a very cheap route to go if that is all the power you need and don't want more from this engine in the future. It works well, and uses all toyota parts minus the intake and exhaust.

I'm sure I'll get flamed for it, but hey... for under a grand my white package auto does 12.51 in the quarter and is dead reliable.

That is weird. Whats the reason behind using NA parts in the turbo motor? I thought things like pistons would be stronger from a turbo motor....

 

[IJ.]

Chris: Trust me you won't be flamed for that
(they might do it once but won't get a second go)

 

[gixxer750]

the pistons are probably just as strong. The point of that is the 9.5:1 comp ratio. The cam moves the power down and promotes earlier turbo spool.

It just works well in a mild street car and puts the boost in a much more useable area that makes the car quick in town and on the track.

 

[reckless916]

gixxer750,

I thought about N/A pistons to when I did my rebuild, but decided not too in favor of higher HP. But I had a civic once...and had a built motor with higher compression pistons and it was fast...like you said, more power with less psi and less turbo lag....that will be my next project...a 7m with a comp of 10:1 with an upgraded ct26 just for fun to see how it turns out!!!