"Parmas" Motor

[advocate]

So if front mount creates huge turbo lag and top mount spools faster but hotter (and thus less boost), how the hell do you pick which one you want? Sounds like very big drawbacks on both parts.

I would think a larger engine, which creates more overall exhaust, wouldn't suffer as much from excess lag from a front mount versus a Yaris which burns much less overall fuel. Correct?

[Parmas]

Job finally finished although it came dark for a good photo... Will get some good photos with all completed...

Next -> lots of tuning and increasing gradually some boost :)

Still not dynod car so I don't want to throw numbers until finished

[Blown_xa]

sweetness

[Blown_xa]

Originally Posted by advocate

So if front mount creates huge turbo lag and top mount spools faster but hotter (and thus less boost), how the hell do you pick which one you want? Sounds like very big drawbacks on both parts.

I would think a larger engine, which creates more overall exhaust, wouldn't suffer as much from excess lag from a front mount versus a Yaris which burns much less overall fuel. Correct?

read my above post. There is no noticable lag.

[rob323]

Originally Posted by advocate

So if front mount creates huge turbo lag and top mount spools faster but hotter (and thus less boost), how the hell do you pick which one you want? Sounds like very big drawbacks on both parts.

I would think a larger engine, which creates more overall exhaust, wouldn't suffer as much from excess lag from a front mount versus a Yaris which burns much less overall fuel. Correct?

You are over simplifying it a fair bit. Both setups can be made to work as good as each other and it depends on what purpose you want to design it for. There's alot of variables to be taken into account though to get it right (eg. piping diameter, bends, pressure drops, turbo sizing and efficiency ranges, gear ratios, cam design/ duration/ timing, engine timing, bov design etc etc).

And if all else fails, turn the antilag on

[cali yaris]

ha, true! just do it my way, that's the best. (just kidding!)

[Parmas]

Some recent pics...

Damn the camera got low battery when I was taking a video. Better luck next time....

[mario98c]

Post Videos!!!!!

[yaris-me]

It looks mean. Does it sound mean?

[cali yaris]

awesome hood, very aggressive.

I would like to see (when you have time) a closer pic of the BOV flange, it looks interesting.

Also interior - any gauge set up?

[blacksandiegovitz]

Originally Posted by cali yaris

awesome hood, very aggressive.

I would like to see (when you have time) a closer pic of the BOV flange, it looks interesting.
Also interior - any gauge set up?

Look like a standard HKS bov flange to me , ie the bov sits in the circle flange and is held in with a C-clip .

Amazing project man I've been following your build and am stoked to see you finally got it all together in the car and running I can't wait to see the dyno #'s

[changchewsoon]

wow parmas, your car looks great!! its a job nicely done! the intercooler is so sexy!

[Parmas]

Thanks guys I appreciate your comments and these are what keep me updating!

The BOV flange is the standard HKS weld on flange as described blacksandiegovitz in his post.

RE: Yaris-me post... well it sounds awesome as described by many here although I need a good camera for you to enjoy the sound

I don't think of dyno it for now but will not miss a video on street.... Please let me enjoy it a while !!!

BTW here is a shot from inside incl. my lovely girl

[Parmas]

Today I went up to a drag race to check how all is working out. Well it was noticed that injectors are maxing out at (about 98% inj duty cycle) 9psi 6000rpm with an average afr of 11:1.

Well although the car runs fine I am sure I will not get a good time with this low boost (thinking of 14s blehh). What do you recommend about the injectors, Brand? ***cc? Type?

I think garm can help me on this :)

Also engine gives startup problems when cold or when not using it for a half an hour or so? Sometimes needs 3 starts to ignite, is this normal or the plugs are too on the cold side?

Thanks!

[cali yaris]

what plugs, and what gap? The gap can make a difference.

11:1 is on the rich side, you'll get a better result around 11:7

sorry, what management again?
Is your car using the ECU's stock cold-start program?

[Blown_xa]

nice. I am curious about final results.

These injectors should work well... http://www.ptuning.com/html/search-r...nd=dw&cmbYear=

they will drop right in and use factory plugs.

Do you have the stock fuel pump?

[Parmas]

Originally Posted by cali yaris

what plugs, and what gap? The gap can make a difference.

11:1 is on the rich side, you'll get a better result around 11:7

sorry, what management again?
Is your car using the ECU's stock cold-start program?

Plugs are Denso Iridium power IK series. Gap is 0.4mm with 5Kohm resistor. Part no is IK22#4

Management is Gotech PROX full standalone, stock ecu not used. Ecu has a map for startup fuelling appropriately adjusted by tuner. I just want to assure that problem is not coming from plugs heat range.

RE: Blown_xa injectors link... why you say "should work fine" are they tested before on a 1NZ?

RE: Air to fuel ... can anyone tell me the appropriate range the afr should be at :

- Idle 1200rpm
- 2Krpm until boost
- above 3500rpm after boost?

Also, since I am considering replacing the injectors to above 600cc, does the engine will startup up rich or lean with a fuel map tune on 340cc inj?

See attachment from a log run at first gear @ 6Krpm ..injector duty are 98%

[cali yaris]

.4mm is .0157 inches. Mine were gapped at .028 and we brought that down to .024 when tuning on the dyno. I think your gap is very tight!

A/F on my car:
Idle: 14.1-14.7
Cruising: 13.0 - 13.5 is the range I've seen, more or less
under boost: 12.5 down to 11.7 at full boost, depends on load etc.

hope that helps.