hoons90
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Can The 732 Engines Be Converted Into 734 Engines?

Fri Nov 16, 2001 8:49 pm

Can they?
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Skystar
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RE: Can The 732 Engines Be Converted Into 734 Engines?

Fri Nov 16, 2001 8:57 pm

Nope.

They are different, the JT-9D and the CFM56-3.
The chief reason is the difference in size - the CFM56-3 wouldn't fit under the wing of a 732 - it barely fits under a 733/4/5's wing.

Cheers,

Justin
 
SailorOrion
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RE: Can The 732 Engines Be Converted Into 734 Engines?

Fri Nov 16, 2001 10:15 pm

No they can't.

SailorOrion
 
L-188
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RE: Can The 732 Engines Be Converted Into 734 Engines?

Fri Nov 16, 2001 10:47 pm

If somebody is willing to spend the money anything is possible.....

But at this point nobody is willing to spend the money.

If there every was a 737-200 reengineering that was proposed I would suspect that they would look at the Tay or the BMR-710 engines as a replacement.

But I don't think the economics will support that work being performed.
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HAWK21M
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RE: Can The 732 Engines Be Converted Into 734 Engines?

Sat Nov 17, 2001 1:18 am

Skystar...The B737-200 has JT8D powerplant not JT9D.
The B737-3/4/500s use CFM56-3 engines.
The attach fittings differ.
But I'm sure it can be made compatiable but it would prove expensive.
regds
HAWK.
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yyz717
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RE: Can The 732 Engines Be Converted Into 734 Engines?

Sat Nov 17, 2001 2:12 am

There was talk back in the early-mid 80s of a 732 reengining program with CFM. Called the 737-250. Around the time the 733 came out and before the 735. There was obviously no airline interest.
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AA737-823
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RE: Can The 732 Engines Be Converted Into 734 Engines?

Sat Nov 17, 2001 4:17 am

No. The biggest reason is that the 732 sits much lower to the ground than the 733-4-5. Because of this, the engine nacelle on the 733/4/5 is flat at the bottom (you've noticed). They had to extend the landing gear to make the plane "taller" even with the flat bottomed engine.

The underbelly/wheel/wingbox area would have to be replaced.

When you get down to it, there isn't much point. Since 737s are still manufactured, just buy a new one. With 727s, it becomes a sensible thing to do.

Randy
 
Skystar
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RE: Can The 732 Engines Be Converted Into 734 Engines?

Sat Nov 17, 2001 12:58 pm

Hawk21M,

Good point - the -9D is a tad larger than an 8D  Smile

Cheers,

Justin
 
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HAWK21M
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RE: Can The 732 Engines Be Converted Into 734 Engines?

Sat Nov 17, 2001 1:25 pm

AA737-823....
Could you confirm that the MLG of the 732 is different from the 733/4/5.
I'm talking ONLY of the landing gear.

I'm aware of the 737NGs having a different MLG.
Pls confirm.

skystar....JT9D is used on the B747.

regds
HAWK.
I may not win often, but I damn well never lose!!! ;)
 
L-188
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RE: Can The 732 Engines Be Converted Into 734 Engines?

Sat Nov 17, 2001 6:16 pm

I supposed you suppose that you could mount a pair of JT9D on a 737 but you probably only need one.....

IF you went with two engines would would have to mount them overwing....much like the AN-72
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Skystar
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RE: Can The 732 Engines Be Converted Into 734 Engines?

Sun Nov 18, 2001 10:22 pm

Yep, I know.

It's also on the 767 - old QF762s have them.

Cheers,

Justin
 
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HAWK21M
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RE: Can The 732 Engines Be Converted Into 734 Engines?

Mon Nov 19, 2001 2:49 am

Is the MLG of the B732 the same as the B733/4/5.
regds
HAWK.
I may not win often, but I damn well never lose!!! ;)

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