hey all

holset h2c turbo... housing on the hot side will not come off.. been soaking with pb blaster... using any number of different hammers, map gas torch, etc and still can't get it to release from the bearing housing.

do i need to use oxy/acetylene torches to get it hot enough to let go? i'm getting close to chaining this thing between 2 trees with a come along or something equally stupid so please offer suggestions if you have any

 

anyone? this is a good turbo, and i don't want to screw it up but i need to get this housing removed.

 

You need an oxygen/acetylene torch to heat the turbine. Make a piece of steel to fit between the turbine bolts and the CHRA. Heat the housing and use the center bolts as a jack to pull the CHRA away from the turbine do this slow and always keep spinning the compressor wheel to make sure you don't have the exhaust wheel coming out at an angle and possibly damaging it. If can't spin the compressor wheel, then the exhaust wheel is jammed.....stop. Tap the CHRA at the bolts to get the exhaust wheel away from the housing.
Don't beat on the turbine with a hammer.

 

thank you for answering. i kind of live in an area with almost nobody into cars so when i run into issues like this i got nobody to ask.

what do i brace against on the chra? are the oil inlet and outlet flanges strong enough or do i need to brace against the part that flares out to meet the compressor housing?

i will put the hammer away. i hope i havn't damaged it... if so i hope the h2d turbine housing i have will fit.

 

I usually clamp the turbine housing in a bench vice with the compressor side facing up. Then heat the turbine housing while using the turbine housing bolts to jack the CHRA away from the turbine. I do use the oil inlet and outlet flanges as jacking points. Just don't put too much pressure because you will damage the bolts and/or threads. That could make the housing unusable or almost impossible to get off.
I unscrew the bolts until they put pressure on the CHRA, then heat the housing, then a tap with a hammer (not beating on it) to shock the housing and CHRA to break free. Then check the housing bolts and try to apply more pressure if they are loose. Then heat a little and repeat until the CHRA will move without heat being needed.

You could try to heat the housing using some sort of fire pit outside.

 

i just wanted to update those who may have to do this like I did.

instead of using the bolts and risking stripping or screwing the threads up, i had a friend use a small pry bar (piece of rebar) and apply pressure between the oil inlet and housing while i heated around the flange on the turbine housing. one of my turbos popped easily apart with the torches.. the steady pressure slowly sliding the pieces apart.

the other turbo (the one i'm using of course) was just short of retarded to pop apart. normal heating with the oxy/acetlyne didn't do ****.. I actually had to tune the torch to as hot as i could, then use the cutting trigger to get the damn housing hot enough to finally start creaking free (after using a rubber hammer on the compressor housing). definitely not a good time.

on a side note, those of you who rebuild turbos... please for the love of all things holy put antiseize on the flange face like the instructions say or plan on at least 2 hours trying to get that damn thing apart next time.