stevieturbo

From a drivers perspective, plug n play kinda thing.....really I wouldn't get too hung up whether the 8HP or the DCT.

Unless you intend driving a load in heavy traffic, with lots of start stop slow moving traffic and slipping clutches. Then either of them will be a good job.

I guess if you had a bellhousing kit to suit say a 6cyl BMW DCT.....I wonder if that same adapter would also then do the 8HP version of the same ?

Obviously flywheel adapters for either the TC or DCT would be a little different

james kiely

iTrader: (5)

which is the best to go for mark ,m3/m4?

markk

iTrader: (2)

For road manners on the 4 pot definitely follow the 8HP. The DCT takes alot more to control the transitions whereas as the 8HP has the TC to handle that sloppy bit at takeup.
Not saying DCT can't do it, the take up process on mine self learns in about 10mins

On the logs you can see it pulse the clutch pressure up until it sees output shaft speeds, I just think that my 8hp in the road car has benefits.
I also have an 8HP70 sat here on the floor in the workshop out of a jag. CAD work has been done, also have a 5 cylinder ST engine, you know, just sat here 😉

markk

iTrader: (2)

Either way for a road Cosworth 1st gear on both is useless. 4.8:1, but on the M4 long ratio 6th and 7th are both over drive.
I'd be using the long box unless you drop your rear diff into the low 2.x:1s

james kiely

iTrader: (5)

thats true stevie i am getting a bit hung up on the availability of dct boxes as apposed to 8hp

the dct is more expensive but you dont need the dct controller when using the max ecu which brings the cost back a bit

it just seems that people are switching to the 8hp from the dct,s

im unsure if the adaptor plates are interchangeable

stevieturbo

But is that a function of your controller ? Not to say the Maxxecu will behave the same way ? ( but yes I'd still say 8HP...only downside it needs an external controller )

Quite a few videos here.

https://www.youtube.com/@ZeroTo60Tube/videos

james kiely

iTrader: (5)

thanks mark ,it will only ever be a road car with some decent acceleration

my engine at present has a bw sx200 and what i love about the 8hp is the fact it just keeps boost with no drop off between gear changes .

i have read dct boxes can sometimes get fuddled on gear changes

have you had any trouble with the sprung hub ?

james kiely

iTrader: (5)

i think maybe its probably to do with the dct boxes being available before the 8hp

thanks stevie ,ive been looking through these videos for ages and a lot seems to be using them and comparing tcu,s with drifting in mind .

thats why i was leading more towards cantcu

markk

iTrader: (2)

Zero issues on gearchanges, my controller is very configurable as to how fast or slow you want shifting. DCT does have to prefill the clutches but I have never not had the gear I want. That is unless the downshift prevention has done it's job until I am below the safe downshift rpm.

Make sure you get a controller that can blip on downshift, certainly makes downshift smoother. Not all control units can I believe.

james kiely

iTrader: (5)

cool thanks mark

i have just emailed max ecu to see if they are planning on direct support for the 8hp

ajamesc

My mate has an elite in his. Good box on track but ruins it as a road car lol. I got a broken tremec and re built it. New synchro’s with carbon ones on 2nd 3rd and 4th. New 3rd gear. New lay shaft and all new bearings.

PercyCurtis

My mate has an elite box but your talking mega money. I’m putting a tremec in mine as I got a broken one and re built it

stevieturbo

WTF is it with these spambots ? they seem to copy peoples posts and regurgitate them

ronf42

iTrader: (2)

I am also interested in an 8hp conversion for my Escos. It is also running rwd, but I hate the T5 box. Maybe it needs a rebuild.. who knows. Interesting you mentioned the Maserati/Alfa. A quick search found the Alfa Romeo Stelvio Quadrifoglio runs an 8hp50z with the transfer case on the correct side and came from a 2.0 turbo petrol. There is one on ebay for Ł1600. Perhaps this could be an option?

https://www.ebay.co.uk/itm/284822437...Bk9SR7bd0s3aYg

stevieturbo

First most important question....does anyone make a bellhousing adapter for it ?

Domiworks do loads, so would be the first port of call.

james kiely

iTrader: (5)

i have sent Domi Works a flywheel for measuring up ,it will take a little time as he is very busy at the minute

i have a million other things to do so I'm not hassling him

stevieturbo

Really the best guy to ask is markk on here. He's had his running on a DCT for some time now, although I think he's looking into the 8HP too ?

HPR are one

https://hpr-tuning.com/products/ford...hp-adapter-kit

HTG who make one of the ecu's maybe offers another ? likely same

https://htg-tuning.com/shop/ford-cos...7-adapter-kit/

One of the Taz guys with an 8HP

stevieturbo

james kiely

iTrader: (5)

amazing piece of kit stevie

ronf42

iTrader: (2)

Most likely not for the Alfa box. I did see the YB/BMW adaptor on Ebay, though did notice the previous comment about Adamat.

https://www.ebay.co.uk/itm/175899293...Bk9SR6Se3ZrbYg

james kiely

iTrader: (5)

i think adamat only does the dct adaptor

ronf42

iTrader: (2)

here is the YB / ZF adaptor

https://www.ebay.co.uk/itm/175899293...Bk9SR96H87_bYg

scoooby slayer

iTrader: (4)

It's handy someone is making a bell housing adaptor to make them fit making an easy conversion, can certainly see why people want them but for me although a modern box would make car quicker everywhere it would spoil the drive, the whole thing I love about my cossie is the stick shift driving experience, nostalgia

markk

iTrader: (2)

The box change made mine so much better.
The car was far more capable than its manual box.

scoooby slayer

iTrader: (4)

I can quite believe it mate would make the car better in every way except the nostalgia, I'm 20 again 😂🤣😂🤣
I enjoy that cossie more than any other car I have, and there all autos in one form or another dcts, slush boxes and a zf 8 speed in the RS6

stevieturbo

Depends. Clutches, gearboxes etc etc that take power, often are not nice. Yes they are bearable, yes we get used to them and think they're ok.....but there are better ways.

Plus autos will always launch better.

I'd think there would be little reason either the 8HP or DCT couldn't be hooked up to an H gate shifter, for "manual" selections of sorts, as well as the option for a more typical up/down too.
It wouldn't feel quite the same, but behaviour would be similar......except smoother. Maybe a little delay.

But in terms of value for money, they can be very good. Strong box for most, affordable, and no need to spend a fortune on nasty clutches.

I'm really seeing the appeal myself, if I hadn't bought another car to play with I'd definitely be doing an 8HP myself.

I may well do a DSG in the other car, but not just yet.

scoooby slayer

iTrader: (4)

Yeah they aren't nice in terms of comfort, but I have enough comfort cars, cossie totally different like they used to be keeping mine way it is 100%

ajamesc

It’s a dilemma for me lol. I like the idea of a modern box after driving my sisters golf r. My Sierra is on a tremec with a helix 7.25 twin plate. I’m sure there ceramic plates. It’s absolutely horrendous lol. But I’ve only done 200 odd miles so not really used to it. Mark can use it fine so it is possible. I guess time will get me used to it. Plus I will fit an AP 14mm master cylinder so my pedal is lighter than it is now. For me I’d have to change my ecu as well I think to one that supports CAN as I guess the gearbox ecu will have to talk to the engine ecu

scoooby slayer

iTrader: (4)

The thing is for ultimate tuning potential, lightning shifts may aswell just buy a gtr and be done with it.

Could sell a cossie nowadays and buy a nice r35 gtr with the money

ajamesc

I’d never sell my saff that’s the problem. Get mine mot,ed and mapped early next year and spend some time in it. I bet after some fun I’ll kick myself for even thinking it lol

james kiely

iTrader: (5)

ffs that must be pretty new,i was messaging him when I was going to go DCT but then i saw people were having problems with the flywheel so decided to go 8hp instead .i asked him would he be interested in making me one and he just ignored me

james kiely

iTrader: (5)

totally agree stevie ,gearboxes have move on so much .lets face it the cossie 4wd box is shit and lets the potential of the car down .when i bought my escos it was completley undrivable with a triple plate unsprung clutch ,so i took the whole car apart.

i cant wait to stick it in auto mode

james kiely

iTrader: (5)

you have to many fast cars carl ,

you can buy a good 8hp for the price of a clutch these days and not worry about breaking it every second day

what im excited about is the fact that you can maintain boost on a big turbo and lose nothing on shifting gears with a clutch

scoooby slayer

iTrader: (4)

Yeah in performance terms theres no comparison, I had loads of datalogs on here showing it when I went from skylines to the r35 gtr, looking at the data the shifts are invisible endless acceleration, huge dips with a stick shift, but far more rewarding to drive imo, I think I've possibly had to long in dcts and autos 🤣😂🤣😂

My daily is a 660 hp merg AMG 7 seat wagon, 0-60 4 seconds every time just mash the throttle, awesome thing I love it

james kiely

iTrader: (5)

my daily is a 125bhp mk7 transit

i will never ever buy another stick shift in my lifetime carl,their shit

james kiely

iTrader: (5)

The Maxxecu guys are looking at adding direct support with their pro series ecu . could possibly be next year,but will be a harness direct from the ECU to the standard BMW tcu which will need a reflash from Maxxecu.

this i think will be a match made in heaven

they will feature trans-brake ,which should make things interesting

stevieturbo

8HP seems to already have a transbrake.

Although not sure on how loose the converter can be to allow rpm's to get high enough for a launch on the trans brake.

That said, it can also do a "virtual" clutch arrangement, which is how the little Ford in the video is launching as far as I know. Like the DCT, you can still have a clutch pedal, linked to a position sensor, and to some degree it can mimic the clutches operation for the driver if they so wish. Although you'd probably only ever need it for launching

james kiely

iTrader: (5)

im not sure stevie ,i wont be launching it

markk

iTrader: (2)

I have virtual clutch pedal. Its a drive by wire accelerator pedal in the clutch position.

markk

iTrader: (2)

Find someone who confirms they fit first. I designed the adaptor as a proto, sent it to Adam, now they sell my design that doesn't fit. I modified the original drawing from my first prototype.