Thread: 16VE + T....Realistic Questions

Ok so thats the plan.

Using SR20VET manifold, T25G or possibly T28BB from the GTIR.
I will be running GTI-R dump and fmic attached with 2.5 system.


Realistically, how much boost will the 16 cope with for a daily driver. Im not to concerned about compression ratio as i can tune the timing right out of it if need be. My concern is the rods splitting or bending like a banana.

Not much information seems to be available on how far they can be pushed reliably. Any adivce or opinions will be greatly appreciated

6-7psi max. You prob cant make more than 320whp without a rod breaking I would guess.

Plus the small turbos won't like the valve overlap that the big 16ve cams have, so you would want a little bit more separation between ports on the manifold. Who knows really, I havn't seen the VET manifold in person. It may do a good job at preventing reversion. But that small turbo will not be able to do the 16ve justice. Go at least a disco, with a free-flowing exhaust housing.

T25 is crap on a SR16VE


You must use a GTIR T28 or larger. I would love to see a GT28RS or GT2871R on this build with a .86 AR turbine housing.

10-12 pounds of boost will be fine on stock compression and stock rods.

Depending on turbo you could see 280-300 WHP at 10-12 pounds of boost. Torque is what will bend the rods and the SR16VE will not make any large amount of torque down low to have this happen.

Detonaition is the only rod breaker but smaller crank motors can run higher boost levels or compression levels together without knocking and pinging vs a larger motor.

i think the 16ve and a gtir t28 will go together alright.

reasons for my argument:

1. the gtir t28 has a bigger ex housing

2. the 16ve cams might have more overlap, but the suit the 1600cc and you are pushing less air from each cylinder at a given rpm. The 16ve will make use of the bigger cams as it will want to make power high up i the rev range

the piston speed is down with the 16ve, so you have no probs reving there, but those long thin rods might cause some woes. You should make over 300whp before they start becoming a prob though

Because of the rod ratio and the short stroke, the sr16ve rods will hold a great deal of power before they will break.

a 15:1 compression ratio NA setup on a stock sr16ve rod will bend or break the rod before 15psi of boost will. this is because of the higher spike in cylinder pressure from an NA motor, A turbo motor has more AVERAGE cylinder pressure across the crankshaft rotation and this causes less stress on the rods.

on a better R/S ratio ( numerically higher) there is less actuall working force across the rod bearing from the rod not moving as much and less piston side load as well so there is more vertical loading on the rod than side loading.

VET turbo manifold, GTiR turbo or GT2860RS and 10-12psi should make a very very nice powerband up to 9000rpm easy.

Gti-r turbo will do well on a 16. How much boost? If it was my own I would do 15 psi+ of course.

Some excellent points there guys!

Ok so, i will ditch the t25, put it in the bin maybe or use it as an ash tray

T28 gtir it is. Im not after extreme power as i still want to tune it a fair bit on e the wideband and get fueling and economy very smooth. Now i have confidence that i can run up to 11-12 PSI on a 100% dead stock engine. Im assuming with the lower displacement of the 1.6 the GTiR turbine should be sufficicent to hold reasonable boost right up until 8-9000rpm?

I can take pictures of the VET manifold for you guys if you would like? Im not sure anyone on here is using the factory one?

Snickers you mentioned that because of the shorter strok its going to be prone to less detonation, is this due to less cylinder pressure heat spikes and also due to the shorter stroke of it?

I am sure Snikers did not mention that. I am sure someone else did.

Wooops

Sorry Mate! really am!

nothing to be sorry about I was just having fun