87 crx 1.5 Engine durability

[mitchdakid]

Ok looking to try out my homemade turbo on the cheap little honda before throwing it on my 82 mustang. Cost a few pennies to try it but rather blow this then the other motor. Will I be ok running about 7 pounds boost through this. Not familiar with how these engine are built or how tough they are. It was rebuilt about 5000 miles ago, stock componets. Any ideas.

[lxndr]

What type/size turbo?
What size intercooler?
What size piping?
What compression ratio are you running in your 5.0?


A 1.5L motor will never be able to effectively spool a turbo that is big enough to boost a 5.0. If you're running twin turbos you might be able to get away with running one of the turbos on the 1.5L, but your lag time will be insane.

Personally I'd take the time to make sure everything is set up right for the Mustang, then go for it!

[mitchdakid]

Originally Posted by lxndr

What type/size turbo?
What size intercooler?
What size piping?
What compression ratio are you running in your 5.0?


A 1.5L motor will never be able to effectively spool a turbo that is big enough to boost a 5.0. If you're running twin turbos you might be able to get away with running one of the turbos on the 1.5L, but your lag time will be insane.

Personally I'd take the time to make sure everything is set up right for the Mustang, then go for it!

It's a mitsubishi heavy industries turbo with an internal waste gate. (around 7 psi) Inter cooler is off a 2nd gen talon and so is the trubo housing. Piping I can make whatever is best for the honda. Just started tearing down the 302 in the mustang to build it lower to handle the turbo. Will be set-up for about 9.5-1. Mustang set up is complete just wanted to see what it would do for the honda while I am rebuilding the 302 motor again.

[cvcc_wagon]

friend of mine was runing 13 psi on a stock 1.5l, eventually spun a bearing when he ran it on reg 89 gas. he as since rebuilt the bottom end and coninues to run 12-13 psi

[lxndr]

Originally Posted by mitchdakid

It's a mitsubishi heavy industries turbo with an internal waste gate. (around 7 psi).

You can easily add a MBC to get more boost out of the internal WG if you want more than 7PSI. But if this is the Mitsubishi TDO6, it's too big for the Honda and too small for your Mustang.

On the honda you will have tremendous lag time, meaning you will have to wait forever for the turbo to spool up because the motor can't flow enought air to get the turbine spinning fast enough to allow the compressor to make boost. This turbo on the Mustang will have the opposite effect, your motor will outflow the turbo. The turbo will spool up and will be maxed out on boost before you hit 4,000 RPM.

Imagine blowing as hard as you can through a drinking straw, this is what your Mustang's motor will be fighting against if you use a turbo that is too small. Now imagine blowing as hard as you can through an empty paper towel tube, your Honda just won't be able to flow enough air to get the turbine spinning.

I'm not familiar with the Talon intercooler but one problem you might run into when using this on your Mustang is heat soak. This happens when your intercooler can't keep up with your turbo and starts a vicious cycle of hot air being pumped into your motor, which raises exhaust temp, which raises turbo temp, which raises intake air temp, which raises exhaust temp, and so on. In a nutshell, if your Mustang motor can outflow your turbo, you will probably have the turbo set at max boost which will heat up the intercooler fast!

If this is the TDO6, then no matter what you will either need a smaller turbo for the Honda, an additional turbo for the Mustang so you can run twin turbos, or one larger turbo.

However the TDO6 is perfect for my 91 MR2 turbo 2.0 motor! I will gladly buy it from you when you're done playing with it. I'll even give you a rebuildable Garrett T3 (don't remember which trim level at the moment) which will work great on a 1.5L motor.

[lxndr]

Originally Posted by cvcc_wagon

friend of mine was runing 13 psi on a stock 1.5l, eventually spun a bearing when he ran it on reg 89 gas. he as since rebuilt the bottom end and coninues to run 12-13 psi

That sounds like Eldo.

[mitchdakid]

The one for the mustang is a T3 turbo from mitsubishi. The other turbo I grabbed from another car at the junkyard to build it for this honda. I guess what would be a good car to get a turbo from?? Maybe a stoik talon one, those are 2.0 and we ahve two of those laying around.