jdm svx trans, will it work?

[Trevor]

Originally Posted by oab_au

The circuit has been modified, but due to my ingenuity I was able to use the same board. I leave it to you to work out, where, how, and why. Harvey.

As promised, I now reply regarding the strange error in the demonstration circuit board, which appeared in the photograph you claim is evidence.

There is nothing difficult involved in accessing what you could do. You must put your cards on the table and advise where you now connect the Brown B+ wire. You have now filled the hole previously used for this connection. Alternatively where you know attach the black B- wire.

You can not make a change leaving the diode where in fact it has been wrongly placed, without moving these wires. The cosmetics will depend on where you attach the wires, and in any event the result must be horrible.

There is no reason for any change, which if made, is going to make one hell of a mess of the board. You have a hard job ahead providing any good reason for a reversal of board polarity, which I can show can be achieved in several ways.

Be very sure, I will check your next batch for ---”The circuit has been modified, but due to my ingenuity I was able to use the same board.”. Cost is not a problem, where honesty is in doubt.

Whatever, I expect another side step. Anything to excuse wrong doing, rather than an honest reply.

It is notable that you are dealing with a very simple part of the circuit, you have confirmed you know nothing about, by posting advice that a simple on/off switch can not be used.

[SoCal LS-L]

Ive seen less fist-flinging among drunken Irishmen

In my humble opinion though, you guys are both pretty cool....

At any rate, postcount +1 !

[bwb3]

I just sit here shaking my head. My SVX just passed 15,000 miles on the QC. Great product, could care less who soldered what.
Gene

[NiftySVX]

Guys, I want to jump back in here and state again, I do not believe that it is a good idea to operate either a a VTD clutch with a control unit for an ACT-4 clutch, or the other way around. Solenoid aside, the best you can hope for is to possibly alleviate the binding, but it will come with a side effect of improper operation of the ACT-4 clutch which will result in damage to the hard transmission components in the long term.

The only proper way to correct this situation is to match the transmission type with the control unit type.

[Trevor]

Originally Posted by NiftySVX

Guys, I want to jump back in here and state again, I do not believe that it is a good idea to operate either a a VTD clutch with a control unit for an ACT-4 clutch, or the other way around. Solenoid aside, the best you can hope for is to possibly alleviate the binding, but it will come with a side effect of improper operation of the ACT-4 clutch which will result in damage to the hard transmission components in the long term.

The only proper way to correct this situation is to match the transmission type with the control unit type.

Special thanks. At long last, the application of a good brain and some common sense.

It should also be understood that under most normal conditions, a standard VTD SVX will not have the clutch overriding the differential. Instruction from the VTD TCU would constitute a low current signal, directed to a N/O “C” solenoid, which would remain open. The final result, low pressure and the clutch not engaged.

In respect of Alex transmission, this criteria also applies, and the normally closed “C“ solenoid now installed, remains closed. As has been reported, this has resulted in near full pressure and lock up.

Under most normal conditions, the proposed change of the C solenoid from N/C to N/O in Alex SVX, will result in a low current signal leaving the solenoid open. Low pressure, will then leave the clutch open. Therefore for most of the time, there will be only front wheel drive.

At all times instructions from the TCU will be reversed in respect of front/rear, rear /front, due to changing the solenoid. However this effect may be partly negated, because either way, the instructions involve a simple coupling of the drive to the rear.

N.B. On two counts, it is important that Alex is made aware of the danger of damage, due to the proposed solenoid change.

[svxistentialist]

Originally Posted by NiftySVX

Guys, I want to jump back in here and state again, I do not believe that it is a good idea to operate either a a VTD clutch with a control unit for an ACT-4 clutch, or the other way around. Solenoid aside, the best you can hope for is to possibly alleviate the binding, but it will come with a side effect of improper operation of the ACT-4 clutch which will result in damage to the hard transmission components in the long term.

The only proper way to correct this situation is to match the transmission type with the control unit type.

I've said the same as this earlier.

It might actually drive without binding, but the control system would not be correct or appropriate.

Joe

[Trevor]

Originally Posted by svxistentialist

I've said the same as this earlier.

It might actually drive without binding, but the control system would not be correct or appropriate.

Joe

Don't worry Joe, when Alex walks back down the garden path, all is ready to sort things out. That is provided he retains an intact transmission.

[NiftySVX]

Originally Posted by svxistentialist

I've said the same as this earlier.

It might actually drive without binding, but the control system would not be correct or appropriate.

Joe

I have too. But it seems like it was necessary to say it again. I attempted early on in this thread to explain why I thought this was the case but it turned out to backfire on me.

[bwb3]

NiftySVX, I am not technically savy but, your posts have been knowlegeable and concise. You are an asset to this forum. Please stay engaged.
Gene

[Trevor]

Originally Posted by Trevor

Don't worry Joe, when Alex walks back down the garden path, all is ready to sort things out. That is provided he retains an intact transmission.

As Nancy would say, "It now looks like the new C boots are made for walking."

[Trevor]

Harvey,

As I predicted Alex now has only front wheel drive. He has for some time been awaiting your further expert advice in reply to his queries.

P.S. It takes but a fool to blow his trumpet off key. Honesty is required when eating humble pie.

[Trevor]

Harvey,

This issue is now cut and dried. As a result of your self serving attitude you are in fact now proven wrong, and what is more are morally at fault.

As a direct result of your persistent, egotistical, wrong advice, Alex is now in real trouble. He urgently requires a replacement for his original US type C solenoid, which you stupidly and wrongly instructed him to remove.

Liability is well and truly proven. Retribution is due. Your move.

[oab_au]

I can tell that you are absolutely delighted that Alex has troubles. It has made your day.

I am not responsible for all Alex’s troubles. He made the decision to buy the trans, without knowing if it would work in his particular car. Unfortunately it was the most unusually combination that I have encountered.

Germany, France, and Switzerland, had the US type trans. Alex did not know that his, was a Euro model, and nobody else did. We only knew that the Euro was delivered in Japan, England, Australia, NZ, Belgium, Luxembourg, Austria and Brazil, but not all had the same speed sensor placement. The US type drives the Speedo off the right front axle. The Euro has all the speeds sensors in the transmission. It uses a different way to drive the Speedo, the TCU is programmed with the gear ratio that the car has, to work the Speedo. The AWD is a VTD, instead of the Transfer system.

When I became involved, and realised that he had a Euro it was decided to swap the old speed sensor from his old box into the new, to get it the same as the TCU needed. Then to swap the VTD off the old box, on to the new. Unfortunately the old box complete with the VTD rear end was scrapped.

This only left the choices of swapping the C solenoid for a Euro type to make the clutch work the right way. Or to change the front speed sensor back to the US type, fit the US TCU and do the necessary wining for the Speedo and TCU to have the units work.

I suggested the former, as it would be within the capabilities of Alex’s garage to do so. He reported that it was not binding, but had a drumming sound. I heard no more. I don’t know what the outcome of the drumming sound was. All the conversion of the diff ratio, and gearbox, tail shaft, mounts, etc was done in Norway, I don’t know that was done with this work.

If you are going to come to his aid to convert the TCU to the US style, you are more than welcome. As for needing a US C solenoid, he could use the one he pulled out, as long as it was not thrown in the scrap also.

I have gone as far as I want to go with it, and I am not going to spend a lot of posts, discussing it with you.
I'll leave it to you.

Harvey.

[Crazypolo95]

when it comes to an JDM Outback trans with the 4:44 and having to change out the rear diff it fixs just right now!

[Trevor]

Originally Posted by oab_au

I can tell that you are absolutely delighted that Alex has troubles. It has made your day.

An apology was hardly expected in view of the many similar instances on record, but an honest reply is called for, rather than dishonest, sarcastic, excuses.

The truth, as is recorded, is continuous genuine concern for Alex. Weeks ago, Alex’ fate, became obvious. It was clear that he was being used in the hope of making Harvey’s day. As always sarcasm is the trade mark of one in error.

I am not responsible for all Alex’s troubles. He made the decision to buy the trans, without knowing if it would work in his particular car. Unfortunately it was the most unusually combination that I have encountered.

This statement is blatantly untrue. Alex current problem, has nothing to do with his original choice, or is of his making. It has only come about as the direct result of Harvey’s instruction to change the N/C “C” solenoid with the incorrect N/O solenoid he Harvey supplied.

Germany, France, and Switzerland, had the US type trans. Alex did not know that his, was a Euro model, and nobody else did. We only knew that the Euro was delivered in Japan, England, Australia, NZ, Belgium, Luxembourg, Austria and Brazil, but not all had the same speed sensor placement. The US type drives the Speedo off the right front axle. The Euro has all the speeds sensors in the transmission. It uses a different way to drive the Speedo, the TCU is programmed with the gear ratio that the car has, to work the Speedo. The AWD is a VTD, instead of the Transfer system.

When I became involved, and realised that he had a Euro it was decided to swap the old speed sensor from his old box into the new, to get it the same as the TCU needed. Then to swap the VTD off the old box, on to the new. Unfortunately the old box complete with the VTD rear end was scrapped.

This only left the choices of swapping the C solenoid for a Euro type to make the clutch work the right way. Or to change the front speed sensor back to the US type, fit the US TCU and do the necessary wining for the Speedo and TCU to have the units work.

I suggested the former, as it would be within the capabilities of Alex’s garage to do so.

In doing so there is no question that wrong advice was provided, as the thread confirms.

He reported that it was not binding, but had a drumming sound. I heard no more. I don’t know what the outcome of the drumming sound was. All the conversion of the diff ratio, and gearbox, tail shaft, mounts, etc was done in Norway, I don’t know that was done with this work.

Again not the truth, and not what Alex has advised by PM. Alex’ predicament has been conveniently ignored and his difficulties in communicating in English selfishly exploited. He has become a porn within a quest for limelight.

Exactly as predicted, and exactly as was expected on the basis of simple technical fact, Alex’ SVX now has no front wheel drive, and all TCU control is backwards/reversed. Bad news and the result bad advice. Fact is fact and wrong is wrong.

If you are going to come to his aid to convert the TCU to the US style, you are more than welcome. As for needing a US C solenoid, he could use the one he pulled out, as long as it was not thrown in the scrap also.

It is damning that inadvertently wrong doing is hereby confirmed, and therefore Alex is now in dire need of aid. All excuse is BS.

Unfortunately, during the useless work undertaken as a result of wrong advice, the correct original C solenoid has been damaged. Alex is now faced with the cost and difficulty of obtaining a replacement. Extra work is also required in order to restore the transmission to where it was prior to Harvey’s stupid instructions. Bad news for sure.

I have gone as far as I want to go with it, and I am not going to spend a lot of posts, discussing it with you.

The final cop out. ----”I have gone as far as I want to go with it”.
A member has been caused great deal of hurt, as is absolutely confirmed. Once again we have the elongated side step and slide out from under. Responsibility is ignored in a despicable fashion.

I'll leave it to you. Harvey.

Clearly confirmation that there is no intent or desire to put right a wrong doing. Thankfully there is at least one other who will stick by Alex.