Why not get us to change it [ rebuild it ] into a 754 case for you? That way it fits either regular car OR ok for PPG.

David APi

To be honest David I need a 6 speed as I will be running 550/550 possibly more. As much as I like the idea of the PPG and the ideal ratios it's alot of money to shell out on a box that will probably brake anyway.

Just seems a ball ache to split a perfectly good box.

Just wish I could sell it on LOL

How much ?
PS gone now until Saturday am - got a day off.

Whatever I can get for it LOL

Ok put it this way, would you have any dealings with a company that supplied the wrong part, then called you pretty much a stupid liar when you called to try and rectify the slight problem?

Yes mistakes happen but its how they are resolved that matters

The resolution, well that involved sending out the new correct parts not a problem you say......................

Well when you are then charged without your say so for the wrongly sent parts kinda takes the mick IMHO especially when they cant even be bothered to send a courier to pick the wrong part up.

Yeah it was sorted in the end, but aint it strange how someone can be out the office so much when you try and get your money back. Yeah where talking weeks................!

Again would "you" have any problem???

Whatever your history with API it is not a reason to be unhelpful to everybody else.

I would like to thank Donald Clark who took the trouble to send me three emails with attachments with lots of Forrester information. Interesting and helpful. Thanks.

Anyone else could have pm'd me, which many have.

Besides I've never hidden the facts its just I had doubters that wouldnt believe. Thats not my problem.

The other option to convert a 3.54 uk box to run on a 3.9 rear diff is to change the tail case to a 752 transfer box and use 1:1 drop gears but obviously wouldnt help if you had a 4.1 rear diff.

David have you had any experience of the two types of 754 drop gears. I have a set of 1:1 754 drop gears that have roller type bearings the same as the 752 type but all the 754 UK boxes I have use taper bearings in the drop gears. Pic of the 754 roller and taper drop gears. the taper ones are 1:1.1 and the roller ones are 1:1. I am not convinced the roller ones are out of an Impreza box.

Attachment 49856

Aaaaah I've got this now.

The gentleman in question got caught out in a problem we had earlier with our couriers.

No doubt about the fact that we sent out a 3 part clutch set with a non fitting centre plate. Once we were told, we sent the last remaining correct centre plate out for overnight delivery. The couriers sent it to the wrong places along with 11 other packages and we and they moved heaven and earth to get them re-directed.

The replacement clutch disc was set up to be delivered on a Saturday morning to preserve the chance that the customer didn't miss a pre booked track day. I sent an email on the Monday immediately after, asking if the parts had arrived successfully.

No reply.

I left things to cool down.

I then tried by telephone, e-mail, and letter over the next 6 weeks or so to seek the possibility of collecting - at APi's expense, from any convenient to the customer, address. The faulty disc.

I still have the correspondence - all of it.

No reply to any attempt. I seem to recall l even asked on the thread on here if anyone knew how best to contact the guy.

Some weeks later I sent a letter to the cardholder address advising that if the goods were not returned within so much time I would have to charge the card we had on file. On the assumption thet the clutch had either been used or sold on.

No reply.

So some weeks later we charged the card for goods that had not been returned. We sent the invoice and card receipt by mail.

That got a reply. Funny that!

We then got into:

" You send it back we'll refund your card "

"Give me my money back and l'll send your clutch back "

" NO!, because you've ignored us for some months, API do not have any faith in the fact that you will do that. Send the clutch - money back instantly."

And so -on, eventually we received the disc back and the money was returned to the guys card same day.

A shame that APi sent a wrong part, a bigger shame that once in a lifetime our couriers f*cked up. BUT we did everything we could to get a disc there in time. For that we apologise unreservedly.

As for charging a card without permission, what were we to do? the goods were clearly not going to come back voluntarily and we played a trump card.

I'd do that again tomorrow.

David APi

The roller ones are from an 05 onwards WRX box. As far as l am aware the taper roller back end will fit onto either type of earlier case.

I will ask Rob, our transmission specialist, for his input on this on Monday and get back to you with a proper answer.

Good luck David

OK david thanks but I dont think the roller one is from a MY05 box as the taper ones are from a TY754VN5AA which I have changed to a 752 transfer case so that I could fit the 1:1 drop gears I needed to use the 3.9 rear diff.
The roller ones are a set I picked up when I got the 752 1:1 gears. They were supposed to be for a 754 box but I have checked the following boxes I have and all have taper bearings TY754VN1AA x2, TY754VN2AA and TY754VN5AA so I am confused :wonder:

So the roller gears came with a TY 752 ?? Correct?? In which case they are not TY752 gears, as all 752 are definitely ball race type and do not interchange with 754 anyway

So you cannot fit 752 gears and bearings into anything but a 752. No matter 1:1 or 1.1:1

AND

You cannot change a ball race type 754 to a taper type 754 and vice versa. You need the correct casings for the appropriate gears - there is no mix and match option.

752 centre diff will not fit 754 casings either. And Vice versa.

Call here to talk to Rob directly if you are still unsure.

David APi

David,

Apologies to keep asking questions in this thread, but would you mind describing the symptoms that would be found just prior to a centre diff failing due to the incorrect gearbox being installed. I understand that there would be a vibration, but would this be a really obvious vibration or a very subtle one? And is it evident throughout the gear range or just in certain gears?

Thanks

Tim

Centre diff TY752 and TY754 are not interchangable.
When you have different diffs front and rear the car handles like a dog, the centre diff is noisey and increasingly so over time with a vibration that gets worse as the centre diff wears. Driven hard the centre diff gets VERY hot and feels like the transmission is wound up as it gets tight.
If you have a good idea which diff is in the front of the gearbox, which is usually the case, it is a simple matter of taking the cover plate from the rear diff and counting the crown wheel and pinion teeth. I use typex to mark the starting tooth count. The C/W is usually stamped on the outside circumference too but I feel confident when the count of both pinion and crownwheel teeth ties up.

David, that is a long post at #69. To condense it, I think you are saying, whichever way up you look at it, the guy is a pratt. Would that be a fair conclusion?

H, I have no further comments to make about #69. I think I have said enough.

Timdog; Harvey has it right relating to the centre diff problem - just one point that l would make from H's comments.

Tranmissions are always hot, they dissipate their heat through the oil into the casing. Almost nobody ever puts their hand on a transmission to find out how hot until they have [ or think they have ] a problem.

Then they are alarmed because it is so hot. My comment is; they are always hot and the difference between correct hot and unreasonably hot is not measurable by the human hand. Compared to an engine, tranmissions get a lot hotter even in normal use.

David

Thanks for taking the time to reply Harvey and David, much appreciated!

I think I am worrying about nothing to be honest - had my gearbox replaced last week (driven around 50 miles since) and there is a slight vibration under heavy load in second gear only - driving normally/under moderate load there is no vibration at all and in 1st/3rd/4th/5th there is no vibration at all. The car is handling the same as before the old gearbox went and I havent heard any out of the ordinary noises!

Right now I am off to read more about other parts that can go wrong and worry about them - a little knowledge is a dangerous thing!

Tim

One thing I have noticed on cars with the wrong diff ratio is that they do not want to roll/freewheel easily.
After quite a few miles driving quite hard so everything is warmed through, I have found that on a car with the wrong ratios front and rear if you engage neutral on a level road at only a little more than walking pace the car will come to a stop because of the retardation from the transmission whereas a car with the right transmission will roll more freely to a less enforced stop. This is obviously because of the drag in the centre diff on cars with the wrong diffs. The car has to be hot before the drag is very obvious.

David
Thanks but i dont think you are grasping what i am saying. Both the drop gears in the pic are 754 drop gears and I know you cannot change the bearings over as the shafts are slightly different and the shafts cant be mixed and matched in different transfer casings. I was trying to find out what boxes, 754, used roller bearing drop gears as 754VN1aa, 2AA and 5AA all use taper bearings so I have no idea what the roller ones are out of but they are certainly not 752.

All 752 boxes I have seen have roller bearings on the drop gears and I currently have a 752 tail case fitted to my 754VN5AA box with 1:1 drop gears so I can use my 3.9 rear diff. This is fitted with 752 1:1 drop gears and obviously its 752 centre diff.

Can the 2006 WRX box mentioned earlier be paired up with a 3.54 R180 diff?

Sorry Got it now.

TY754 VN1AA seems to have 2 variants. It is first seen in 99 UK cars and RB5 and has ball races. BUT I have seen a 1AA with taper rollers too.

NOW, whether that is and old box with a new type back end fitted I couldn't say. We have certainly built and sold dozens of ball race 1AA's as that is our fastest moving seller for recon boxes. 1AA is most regularly ball race type and I don't thik you could rely upon finding a 1AA with tapers easily.

Go 2AA, 3AA, 5AA, 6AA and l think you'll be safe in assuming tapers every time.

David

2AA and 5AA and 6AA are definitely all taper rollers in our experience

Don't see why not. It is designed around 3.545 rear diff and it matters not whether that is an R160 or R180.

Sometimes there is a different pcd for the prop to diff flange bolts and the holes need re-drilling on the diff flange.

You can of course change the diff flange for one with the holes in the right pcd.... BUT have you ever tried to undo the nut on the diff flange?

It brings a whole new meaning to the word TIGHT. It makes cam sprocket bolts seem loose.

David

I'd just read that the 2006 wrx box and a FD of 3.7 which made no sense to me.

I'm going to put the box into my type R as a stop gap until I find a forrester 6 speed.

Just need to get hold of a 3.54 R180 Diff.

Thanks

David

I can assure you have no correspondence from me, as i never have or will deal with you. you must be mistaking me for someone else. :Whatever_

Daz
I assume your current R180 is a 3.9?

I have one of these boxes sitting as well, where did you get the clutch and actuator from as all I have is the box which is useless on its own. :wonder:
Also if your rear diff is a 3.9 you could pull the transfer case off and see if a 752 with 1:1.1 drops will fit the same way the earlier 754's do and then you will a box which will mate with your 3.9 rear diff. This is what I have done at the minute as a stop gap. :thumb:

You clearly have a down on API and have no intention of dealing with them but if you have not dealt with them how do you know what their service or prices are like and how do you come to the strong position that you have now taken.

Must admit the slagging off going on in this thread is becoming tiresome. The thread is about gearbox ratio's etc not about I dont rate this company or i dont like him etc:brickwall

Hear hear. Ta !

David APi

Not sure if this would work as the 6AA and 7AA casings are much wider at the front drive shaft output area so something around the centre diff must be radically different to need such a big mod to the casing :wonder:

hi guy's , first post i know . so sorry if its abit cheeky :rolleyes:

i have come across a brand new old stock box and i carnt quite seem to find out what it is , i've checked the codes on the data site on page 1 but it's not on there

all i know is it's a 4wd box with a code TY75 FCB1DV



thanks for any help in advance :D

Sorry. Never come across that trans. code. Are you sure it is right?