timing and cr

[ibizz]

hi again people

not first questions here about it , but since then the project stop becouse another priorities

now ive almost all stuff to turboed my 1y engine with vnt 15

the questions now is did anione that turboed same atmosferic engine bother changing timing and lower cr ?

[R.O.R-2.0]

my vnt15 build, i used the same compression and timing as a n/a.. worked fine.. my engine would benefit from more timing tho, i think..

[ibizz]

thanks

same mecanic says that beter redard or advanced time , becouse of turbo but i dont know why ..

thats why im asking

how do you control your vnt geometry ?

i think il just change the vacuum acuateur for 1 pression wastegate .

[ibizz]

did you calibrate the injectors ?

do you think its worth calibrate injectors for use with na pump ?

[carrizog60]

use all specs like a TD engine.
timing near to 1mm, injectors at minimum 155bar.
search for some threads regarding vnt control,its well discussed here.

1Y is almost the same as aaz,so no worry for compression and such...

[gigaz2]

also, your mechanic is telling you the mods needed for gas engines, these are nothing like that

[R.O.R-2.0]

did you calibrate the injectors ?

do you think its worth calibrate injectors for use with na pump ?

130, or 135 bar injectors will both work just fine with an n/a or TD pump.. you just have to run a LITTLE more conservative timing on n/a injectors..

155bar injectors do atomize the fuel better, but either work just fine. ive never noticed a power difference with the different injectors ive run..

i have 135bar injectors, and a n/a fuel pump on my n/a long block. and it doesnt care at all. still makes very good power..

[ibizz]

use all specs like a TD engine.
timing near to 1mm, injectors at minimum 155bar.
search for some threads regarding vnt control,its well discussed here.

1Y is almost the same as aaz,so no worry for compression and such...

boas amigo

ja falamos

como esta a tua maquina ?

[ibizz]

also, your mechanic is telling you the mods needed for gas engines, these are nothing like that

not my mecanic


just around corners mecanic LOL

[ibizz]

did you calibrate the injectors ?

do you think its worth calibrate injectors for use with na pump ?

130, or 135 bar injectors will both work just fine with an n/a or TD pump.. you just have to run a LITTLE more conservative timing on n/a injectors..

155bar injectors do atomize the fuel better, but either work just fine. ive never noticed a power difference with the different injectors ive run..

i have 135bar injectors, and a n/a fuel pump on my n/a long block. and it doesnt care at all. still makes very good power..

from that you dont consider spend some money to calibrate them ?

n/a oem injectors ive 120 ? 130?

[R.O.R-2.0]

why would i calibrate injectors that were just built around 10k miles ago? the pump and injectors were already serviced on this car..

im not gonna re-calibrate if i were to want more break pressure.. i have a set of 155bar TD injectors, that were rebuilt around 15k miles ago..

why do you think you need to modify your injectors? stock injectors will work fine. may even make a little bit more power, because the injection pump doesnt have to build soo much pressure to open them..

i actually prefer to use the injectors that the pump is timed to. every time you change the brake pressure, you have to change the timing..

more break pressure = later timing, and you fix that by advancing it..

do what you want tho, if your MIND IS SET on paying someone to calibrate your injectors, then go for it. the only time i would suggest it, is if you are rebuilding your engine, or your injectors have a TON of miles on them, or are smokey at cold idle, or it has starting issues, or something like that.. if they are noisy, or a cylinder is missing, then its not a bad idea.

its generally not a good idea to have perfectly good injectors re-built. pop tested isnt a bad idea, plus you can check the spray pattern while your at it..

where are you getting 120bar and 130bar OEM injectors?!?!?!

only kind ive seen OEM are 130bar, and 135bar injectors in n/a engines.

155bar in TD engine

180bar in a 1.5D

[ibizz]

thanks friend


only kind ive seen OEM are 130bar, and 135bar injectors in n/a engines.

this is what im trying to ask ..

sorry my rusty ingles ..


i im not set my mind to calibrate , in fact im asking becouse if its not very important i skip this step

the stuf to plug in cost god bucks in this portuguese crysis lol
so for now im tring to skip the minor things .


another question comes to mind , since the stuf is in my hands

its whorth make pot and polish in admission and exaust manifolds ?

[R.O.R-2.0]

thanks friend


only kind ive seen OEM are 130bar, and 135bar injectors in n/a engines.

this is what im trying to ask ..

sorry my rusty ingles ..


i im not set my mind to calibrate , in fact im asking becouse if its not very important i skip this step

the stuf to plug in cost god bucks in this portuguese crysis lol
so for now im tring to skip the minor things .


another question comes to mind , since the stuf is in my hands

its whorth make pot and polish in admission and exaust manifolds ?

how much power you looking to build? there wont be much, if any difference on an n/a engine..

you might notice it if you are going turbo charged, and your building up over 100hp.

if you feel like gasket matching the intake and exhaust ports, it wont hurt.. but with the stock TD, and n/a intakes, they both flow soo horribly, that porting doesnt even do much good.

i got more power when i changed over to a gasser CIS manifold from the TD manifold, rather than when i ported my head. if you can fit a gasser intake manifold, they make a good boost in low end power..

[ibizz]

my engine is a 1y with that  huge admission manifold that is good for big turbos , not litle like vnt15
i dont know the gasser one ..

but what ive to trying to reach 100 , 110 hp is

vnt 15 , afn 110 exaust and admission manifolds

intercooler with original tubbing from afn too

and ive the exaust line 55mm from gttdi 110 too

so no n.a manifolds

[R.O.R-2.0]

sorry dude, its just a bit hard for me to follow your thread.. makes my head hurt to just read it. its too jumbled.

the bottom line tho, use the 1Y intake manifold, and the TD exhaust manifold/turbo..

you gotta get oil feed lines, and return lines made up, or bought tho. along with everything else for it.

you will get 100hp out of the n/a pump on the 1Y without much problem.