"UN Spec" H151F? (3 Viewers)

[SNLC]

I recently purchased a new in box H151F. When I pull up the part number I get the notation "Un Spec".

Does anyone know that that means? Any help with the bellhousing in terms of which engine it is for?

330306A211 Toyota TRANSMISSION UN Price: 3524.88$, Weight: 102kg - PartSouq - Auto Parts Around the World

Cheers

 

[gnarlynick2072]

This is an H150 w/ 1FZ bell housing. Not sure about UN spec though...

 

[SNLC]

This is an H150 w/ 1FZ bell housing. Not sure about UN spec though...

You sure it is a H150 and how do you identify?

Cheers

 

[gnarlynick2072]

33030-6A211 is the replacement for 33030-6A050 which is from a 92-99 FZJ7# series. Typically 70 series have H150. You can also check if it's H150 by checking the part #s of the internals and looking at 1st gear. Typically the indicator is that 1st gear has a single synchro in H150 and triple in H151.

 

[SNLC]

33030-6A211 is the replacement for 33030-6A050 which is from a 92-99 FZJ7# series. Typically 70 series have H150. You can also check if it's H150 by checking the part #s of the internals and looking at 1st gear. Typically the indicator is that 1st gear has a single synchro in H150 and triple in H151.

Cool and thank you. It was advertised as an H151F. My bad for assuming it was.

Cheers

 

[gnarlynick2072]

Cool and thank you. It was advertised as an H151F. My bad for assuming it was.

Cheers

They're basically the same. Just different gear ratios in lower gears. 4th and 5th are the same.

 

[OGBeno]

33030-6A211 is the replacement for 33030-6A050 which is from a 92-99 FZJ7# series. Typically 70 series have H150. You can also check if it's H150 by checking the part #s of the internals and looking at 1st gear. Typically the indicator is that 1st gear has a single synchro in H150 and triple in H151.

Which now supersedes to 33030-6A420. H151F new behind a 1FZ iteration is now discontinued from Toyota. Only H150F’s are still available.

And UN is short for Unit. As in Transmission Unit. Has nothing to do with spec. Spec is never associated with a part number or description.

It’s internal part people shorthand.

 

[SNLC]

Thanks @beno for the clarification, I appreciate it.


The reason I thought it was "Un Spec" is because it is the only trans I look up that has "UN" in the description and I have looked up 10+. So obviously my bad there. I had definitely suspected it was a 1FZ H151 with matching bellhousing because of where it came from.

And since it is out of production, it was that much more of a score!

Cheers

 

[OGBeno]

ASSY: Short for Assembly
UN: Short for Unit

In the Toyota parts nomenclature world.

The reason this is called a "unit" is because you get the bellhousing, clutch slave cylinder, throwout bearing, fork and boots all in one part number (hence the letter in the suffix number)

An "assy" would be just the transmission itself, for example, 33030-60450.

 

[Tugarin]

They're basically the same. Just different gear ratios in lower gears. 4th and 5th are the same.

Not really, 150 is weaker and prone to brake way sooner than 151.

 

[Tapage]

Not really, 150 is weaker and prone to brake way sooner than 151.

whaaaaaat .. !

where do you get this ...?

 

[gnarlynick2072]

whaaaaaat .. !

where do you get this ...?

I agree with tapage on this one... what components are prone to breaking?

I always assumed that failure rate was directly related to age and generation of the gearbox considering Toyota has revised the internals in these things so many times.

 

[mudgudgeon]

I agree with tapage on this one... what components are prone to braking?

I always assumed that failure rate was directly related to age and generation of the gearbox considering Toyota has revised the internals in these things so many times.

Yup, same reaction here.
H150 & H151 are essentially the same.
Bearings, shafts etc are all common.
They have different lower gear ratios, and H151 has triple ring synchros on 1st and 2nd gear, H150 all had single synchro rings on all gears

H150 that were used behind 1HZ in 80s had a slightly thinner input shaft with 21spline spigot. I've never heard of an input shaft failure though

 

[Locked79]

Not really, 150 is weaker and prone to brake way sooner than 151.

H150f and H150f are essentially the same box. Only 1st and 2nd gear ratios differ (H150f being lower). Maybe your thinking of the R150f which is significantly smaller and weaker.

 

[Tugarin]

I dealt with couple of H150 vs 151. H150 behind FZ and HDs fall apart for some reason. And swaps with bigger engines kill them way faster than 151s.

 

[roscoFJ73]

I dealt with couple of H150 vs 151. H150 behind FZ and HDs fall apart for some reason. And swaps with bigger engines kill them way faster than 151s.

Its not the experience in Australia. Some of the early H150 in 90-92 had synchro problems, but that is well taken care of by now. They seem to last 400000+klms if treated right.

 

[mudgudgeon]

Its not the experience in Australia. Some of the early H150 in 90-92 had synchro problems, but that is well taken care of by now. They seem to last 400000+klms if treated right.

Agreed.
They do seem to be sensitive to the type of oil used.
I've just changed the oil in a new to me '93 80 series with H151, replaced it with castrol VMX-M 75w80, friction modified for better cold shifting.
The shifting is vastly improved. It's the same grade as what Mr T specified, but slightly lighter weight, totally different feel shifting gears.

 

[JuanJ]

Its not the experience in Australia. Some of the early H150 in 90-92 had synchro problems, but that is well taken care of by now. They seem to last 400000+klms if treated right.

Hello,

x2.

The H150F and 151F are sturdier than they look.

Most gasoline/petrol Troopies I have seen have the H150F. Some were very battered but somehow the transmission still worked.







Juan

 

[roscoFJ73]

Hello,

x2.

The H150F and 151F are sturdier than they look.

Most gasoline/petrol Troopies I have seen have the H150F. Some were very battered but somehow the transmission still worked.


Juan

True . For some reason the petrol models always seem to suffer more abuse than the diesels in private ownership here. I think its because the high cost of running a 1FZ powered 7* series often led to multiple owners who only kept them for short periods. They were good on the beach ,so I have seen quite a few rusty ones owned by fisherman.

 

[SNLC]

From the Aussies....




Cheers