boost problems

[reecegze]

yer time is the issue.. I work on call so i get very little time to try things its 11pm and i am out side working on it But its slowly heading towards the fact the turob is to laggy maybe.. which is useless to me

[30psi 4agte]

Can you post some pics of the turbo?

[The Real Roadrunner]

Majority of "hiflows" ive seen/used have been extremely laggy as they aren't matched overly well (plus other issues). instead of going thru all the pain of trying to get this one sorted just rebuild the old one or put a GT2860r on it and be happy with the results.

[reecegze]

[img=http://img17.imageshack.us/img17/1567/005ffz.jpg]

[reecegze]

I am going to try to pretension actuator more as turbo builder rekons manifold pressure is forcing the gate open to earlier as the t28 actuator is not suited for this hiflow version.. Its also oil cooling only is anyone wants to know

[30psi 4agte]

Hmmm something is wrong somewhere. Its still a baby turbo and to see full boost around 5200 rpm is too late for me.

I was running this bush bearing turbo and seeing a full 30 psi by 5000rpm

[fixeruperer]

^ what he said

[reecegze]

What are you turbo specs please mate.. engine mods is it a 4a or ? , compression ratio and engine management etc

Hmmm something is wrong somewhere. Its still a baby turbo and to see full boost around 5200 rpm is too late for me.

I was running this bush bearing turbo and seeing a full 30 psi by 5000rpm

[reecegze]

Also is it true about the run in on turbos.. After run in of the turboshould it be faster response time as the bearing as settled in and less friction on the shaft.

[30psi 4agte]

What turbo specs yo want? the one pictured or my new one.
Yeah its a 4a the one in my avatar.

Engine is pretty much std

As for run in....... bit of a myth. There would be some benefit after time but youd never really notice it.

That turbo was a turbonetics T60-1 comp wheel with a 13b rear wheel in a 12a rotary core.

The new one is a GT3540

[reecegze]

the front comp size .. rear wheel size . rear housing ?.. I just cant see why yours can spool so fast with a massive turbo , what ecu do you have?

[30psi 4agte]

Me neither!
My comp cover was a .7a/r
The rear wheel was bigger than the one you have.....cant remember exact size but it was around 60 odd mm.

I recon there is issues somewhere...... prob with the turbo wheel matchings. Like you said my old turbo was bigger and boost far quicker.

Get that gate sorted and go from there.

[reecegze]

the rear wheel on mine is 65mm so its 5mm ish bigger then yours

[30psi 4agte]

Yeah but isnt yours 65 in total? my old one i think was about 60 odd mm at the exducer the actual wheel was bigger.
I dont have the turbo any more so i cant give exact measurements.....im only guessing
I did a bit of a side by side pic. Assuming the turbo flanges are about the same size as each other in both pics you can see the difference in wheels sizes.......which is abit

Regardless of the wheels sizes....... it should be boosting quicker than it is.