Turbo Rebuild

[MAK]

I have a Mitsubishi turbo that was taken off of my dad's syclone a few years back and I was thinking about having it rebuilt or at least checked out. It is not the factory turbo and I can not seem to find any information on it based on the numbers I found stamped on it. If anyone has a way to reference the numbers below or can tell me of a website I would be most greatful.

The numbers are:

79-14300 (on bell housing)
DUCM 9C (on bell housing)
14 (on flange)
49179-54900
A

An internet search did not reveal anything. Thanks in advance.

 

[MAK]

Re: Turbo Rebuild

The best I can tell is it might be a 20G with a 14cm turbine housing.

 

[Beavis]

Re: Turbo Rebuild

A 20g should have a double blade on the impeler I think, and if its stamped 14 on the exhaust, it very well could be. Does it need a rebiuld? Is the shaft sloppy? Alot of people have done it, and some have had bad luck after doing it. Consider a good shop to do it for you if the price is right.

 

[MAK]

Re: Turbo Rebuild

It does have double impellers. The shaft play is very minimal. I am pretty sure it works fine but it did not seem to be good on a stock truck. The shop talked him into buying it without telling him the other things it would affect.

 

[Beavis]

Re: Turbo Rebuild

If he went from stock to the 14cm2 then ya he would not like the added lag of it and a tune would of been in order.

 

[MAK]

Re: Turbo Rebuild

Hmmmm....I see a turbo replacement coming up. It needs a good cleaning, wastegate check and install. I am about to get the tuning parts. I might not even need to have it rebuilt. I guess I should take a closer look at it.

Thanks for the info.

 

[Quickstop [UK]]

Re: Turbo Rebuild

A 20g on a stok truck is a dog. My Typhoon was slow off the line and my friend's Syclone was also very slow off the line. He couldn't brake boost more than 5psi.

We swapped out the torque converter with a Hughes 3000 rating and it was spinning all four off a launch. That might be part of the problem.

It would definietly need a new tune as well.

 

[TYTILIDIE]

Re: Turbo Rebuild

49179 is a 20g number. If it were me I'/d contact Waller and see if he still does turbos. He always did a great job for me on them.

 

[MAK]

Re: Turbo Rebuild

Mike - I spoke to my mom and she thinks my dad had the turbo replaced because it did not seem to work right, not because it did not work at all. After determining it actually is a 20G it all makes sense as to why he felt it did not perform better than the stock turbo. The truck was completely stock when the 20G was installed. It does need to be gone through and cleaned for good measure, but I don't think it needs a rebuild after all. The shaft is tight, it spins freely, and the fins are not bent anywhere. Seems like I might have found a little treasure. Hopefully Waller (or someone else) can go through it and check it out.

Now I need to add a 3000 stall converter to my wish list. I keep reading that is the way to go with a 20G. I am not sure what to do about the 14cm housing, though. Put the 20G compressor to the stock 8cm housing? How would this affect the stall?

 

[Beavis]

Re: Turbo Rebuild

You could do a 2600-2800 and a tune. That would work well on a stockish truck.

 

[TYTILIDIE]

Re: Turbo Rebuild

Beavis is right. Why bother with a higher stall and an 8cm housing? People run the 8cm housing to avoid the higher stall. IMO, I'd do the 2500-2800 stall 9/11 all the way. You WILL be happy. Nice thing about the 20g is that you really don't have to mod the piss out of the truck to get it to perform well and you can take it pretty far for not a whole lot of money.

 

[MAK]

Re: Turbo Rebuild

Thanks for the help. I also read that to avoid having to get a higher stall TC you can add the 20G compressor onto the stock 8cm housing and keep the stock stall TC without a lot of loss in power or spool rate as compared to the 20G/14cm/2800-3000 stall TC setup. This might be the way to go for now until I can afford to go all out and buy a higher stall TC and have someone install it. Sounds like that will be the way to go when I can afford to get it done (20G/14cm/2600-2800 stall TC).

Are the differences in power/spool rate between the two options (20G/stock 8cm/stock stall TC vs. 20G/14cm/2600-2800 stall TC) substantial?

 

[Beavis]

Re: Turbo Rebuild

I think my 20g 12cm2 with a 2800 PI converter drives great and spools fast.

 

[Darin]

Re: Turbo Rebuild

Problem is you can 't just swap the compressor side onto your stock turbo without getting the turbo rebalanced and rebuilt. That alone will be half of a new converter.

If the turbo is in good shape (which from your description it is), spend the money on the torque converter then tune it. You won't be disappointed.

 

[MAK]

Re: Turbo Rebuild

Problem is you can 't just swap the compressor side onto your stock turbo without getting the turbo rebalanced and rebuilt. That alone will be half of a new converter.

If the turbo is in good shape (which from your description it is), spend the money on the torque converter then tune it. You won't be disappointed.

The problem is getting the TC installed. There is only one shop around here that is very busy and the price to get this done will probably be outrageous. I do not have the tools or space to tackle this on my own either. I would much rather go the TC route so I might just hold off on that until I can afford it. The TY is fine for now. It has a naste oil leak I need to tend to first anyway. My wish list just keeps growing. I am about to buy some tuning stuff and I also have new shocks and springs on their way so my Typhoon allowance has been exceeded, according to the wife.....

Damn, these trucks are expensive.....too many goodies.

 

[TYTILIDIE]

Re: Turbo Rebuild

You don't have a friend who's house you could swap the TC at? It is a fairly easy job, shouldn't take a beginner more than 4-5 hours.

 

[Quickstop [UK]]

Re: Turbo Rebuild

Or you could replace the turbo with a stock version.

We were trying to get a 2500-2800 stall but went with the 3k for cost reasons.

 

[MAK]

Re: Turbo Rebuild

Mike - I might be able to coordinate it eventually. I need to research the task and make sure I feel comfortable attempting it with the tools I have.