996 turbo wastegate adjustment

[widow maker]

need to sort out my wastegates one clip that holds the 2 nuts apart on the passenger side fell off a while back and the other side is well rusty and the nuts are rusted away how important is the adjusting once i've cleaned it all and put new bits on do they both open at the same time and how do i set boost ??????

[widow maker]

anyone

[smj996c]

don't mess about mate just take it to someone who knows what they are doing ie your local Indy.

[996ttalot]

Your tuner will do this when you have the remap. You need to make sure the cracking pressure is correct and it must be the same on both sides.

If you need to replace the actuators then do them in pairs ideally

Ken

Edited by 996ttalot on Wednesday 23 November 19:17

[996ttalot]

Actually I don't understand why you are asking this - just checked your posts and you said you had a remap done ?
Am I misunderstanding your question?

[widow maker]

the remap is done and was told that the end of the wastegate rod had broken off leaving just enough there to get the back nut back on passenger side , the drivers side nuts and clips were also very rusty and nearly gone so they need to be replaced there wasnt enough time to get this all sorted on the day as i had the map and some other more important stuff sorted out and coundn't leave the car with them as its miles away from where i live so im going to do this now

[sportsandclassic]

Hi,

This does not sound good. Yes the actuator rods and adjustment rods do corrode...BUT this should really be checked before you remap the car! I would not be happy with the mapping as the wastegate is not functioning correctly and yes you need a specialist to sort it all out, and then DO get the air/fuel mixture checked by a garage with rolling road and wideband lambda exhaust pickup.

The wastegate actuator needs setting up with an air pressure of 0.5 Bar and a travel on the wastegate rod of 4mm.

Mike

[996ttalot]

Okay, just buy a new pair. It is not worth it given what you say in terms of the condition because you will find the flaps will start to stick as well. It is one of the first things we check because it is pointless remapping if the actuators are in poor condition and also you will find a lot of cars are running around on actuators which are leaking - e.g. not holding pressure - it is a very common fault. As you say you were far away.

Don't screw around with number of turns as well on the rods, just buy yourself a hand pump and pressure test the actuator - you will need to check with your tuner what the pressure should be set at, because he may be doing something with the map on this, so there is no point in me telling you the cracking pressure to set them to. That way in the future you can check the pressure and leak check the actuators on a regular basis.

BTW, I wouldn't buy the Forge ones. You have to set the cracking pressure higher to maintain the same boost. You can get original kkk ones for around £300 for the pair.

Ken

[m996tt]

996ttalot said:

BTW, I wouldn't buy the Forge ones. You have to set the cracking pressure higher to maintain the same boost. You can get original kkk ones for around £300 for the pair.

Ken

My Actuator on the passenger side has rusted and broke off and I was going to purchase a set of
the Forge ones and change both, are you saying the Forge ones are not any use. And if so where can I
purchase the KKK ones

Max

[996ttalot]

m996tt said:

996ttalot said:

BTW, I wouldn't buy the Forge ones. You have to set the cracking pressure higher to maintain the same boost. You can get original kkk ones for around £300 for the pair.

Ken

My Actuator on the passenger side has rusted and broke off and I was going to purchase a set of
the Forge ones and change both, are you saying the Forge ones are not any use. And if so where can I
purchase the KKK ones

Max

We have fitted the forge ones before as stated and we had to increase the cracking pressure more than usual to maintain the boost we had before and that was adjusting the springs.

I am not trying to have a go at Forge, just recounting our experience, and we do a lot of turbos!. We use their DVs and hoses which are excellent. Our turbo builder does not rate them either.

However, given we can buy the originals new for the same price as the forge, then our preference is to use the kkk ones on std turbos.

Not sure where you get them from but if you get stuck I can get them for you.

Ken

[ZeroH]

996ttalot said:

I am not trying to have a go at Forge, just recounting our experience, and we do a lot of turbos!. We use their DVs and hoses which are excellent. Our turbo builder does not rate them either.

Samco hoses are the best mate ;o)

.... but much more expensive !!

[Mr Freefall]

ZeroH said:

Samco hoses are the best mate ;o)

.... but much more expensive !!

Fordge flow more air...;-)

[ZeroH]

Mr Freefall said:

Fordge flow more air...;-)

I haven't measured the respective diameters so you may be right - but the quality of material and construction of the Forge doesn't compare to the Samco imo.