Hey guys, I just finished with my first turbo install and I am still not boosting. I have a garrett t25 with an external wastegate and I have all my lines where I should. I have a 6mm vacuum running from the outlet of the turbo to the charge piping connected to the side port on the wastegate. I don't have anything attached to the top vacuum port of the wastegate as from what I understand, this port is optional for boost control. With the engine running I can place my hand over the intake hole of the turbo and the I can feel the vacuum very strongly, so I don't believe there are any leaks in the charge piping. The turbo doesn't spin at idle but it does start to spin under acceleration. It doesn't seem to spin that quickly but it does spin. On a test drive the boost gauge never registered anything over 0. I bought this used from someone who had just taken it off from his setup running 15 psi. I am curious if this has something to do with the wastegate or something I haven't done right. Anyone have any ideas?

 

https://www.homemadeturbo.com/forum/...?topic=77989.0

we understood ya the 1st time...

 

well it spins but doesn't boost. new, bigger issue. the other thread was my stupidity

 

check for exhaust leaks? what wastegate are you using? My bro had somewhat the same problem, it turned out he forgot to put in the ring sealer for the wastegate(tial 38mm) to the manifold and had an exhaust leak. As well his turbo didnt spin during idle but dont know if it does now since he just fixed it.

 

are you referring to the copper spray? Here are some pics of my setup:

 

Do you have a crack in your intercooler?? Are you sure there are no boost leaks What size turbo is it?? What RPM are you taking it to while driving?? Are all your charge pipes hooked up?? What are you using for fuel control?? Post more specifics on your setup. and if you aren't running a dumptube off that wastegate you are going to melt something.

 

did u install this on the wastegate?

 

Hahaha that would be funny

 

what is that supposed to be taken out?

 

That would be called the fire ring.....lol I dont think that he would be that stupid to not put that in.