Cosworth straight cut box info.
15-09-2017, 07:28 AM
#41
PassionFord Post Whore!!
Small....I'd say variable, rather than small.
Just depends on driving type at the time, type of clutch etc etc
Sometimes you might be able to make it pretty smooth, others not. But a lot depends on overall drivetrain to. If everything is fairly tight, box rubber mounted etc then any clunks would be less noticeable anyway.
But you can never expect it to be as smooth as a synchro box. But then a full manual synchro box will never shift like a dog box when racing.
Just depends on driving type at the time, type of clutch etc etc
Sometimes you might be able to make it pretty smooth, others not. But a lot depends on overall drivetrain to. If everything is fairly tight, box rubber mounted etc then any clunks would be less noticeable anyway.
But you can never expect it to be as smooth as a synchro box. But then a full manual synchro box will never shift like a dog box when racing.
15-09-2017, 07:45 AM
#42
10K+ Poster!!
The reyland one was an OS Gicken kit but it was £10k drive in drive out job.
The Skyline box is a lot heavier than a standard box
15-09-2017, 09:43 AM
#44
10K+ Poster!!
15-09-2017, 10:50 AM
#46
Another popular box these days for those wanting a synchro is the 350z CD0009
Ratios may not always suit, but the boxes are fairly affordable, will obviously shift very good being modern Japanese and are supposed to be very strong.
There are many fitting kits for different motors ( 2JZ, LS V8, Various Nissan engines etc ), although I doubt a Cossie is one of them.
http://collinsadapters.com/index.php/swap-kits.html
15-09-2017, 03:47 PM
#48
PassionFord Post Whore!!
As far as I am aware only Reyland offered the conversion. My bellhousing when I had Skyline box was done by MK but Coley and M K with the WRC Fiesta cut and welded their own bellhousings to stitch on to the cossie end.
The reyland one was an OS Gicken kit but it was £10k drive in drive out job.
The Skyline box is a lot heavier than a standard box
The reyland one was an OS Gicken kit but it was £10k drive in drive out job.
The Skyline box is a lot heavier than a standard box
15-09-2017, 05:35 PM
#49
10K+ Poster!!
Exactly, when you can pick up an rx8 gearbox to replace a type 9 for hundreds. If you can find a production car alternative it can be great.
15-09-2017, 08:42 PM
#50
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20-09-2017, 03:05 PM
#51
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Howevere, with drop gears & 4.4 diff it makes for nice ratios for hooligan road going kit car, prob want a different diff for a track car.
21-09-2017, 05:34 AM
#52
I've found that life I needed.. It's HERE!!
Thats true, it`s like standar on shift. These kit have a 20degree cut
22-09-2017, 05:31 AM
#54
I've found that life I needed.. It's HERE!!
That was the weigt we got on my mates box, it was heavi as hell, not sure what model Skyline it comes from
22-09-2017, 08:50 AM
#55
10K+ Poster!!
I believe the Skyline boxes are actually 25kg heavier. I was told by quite a few sources that the syncros do not like to be rushed so if you shift too quick you can damage them and then you get the crunch on change, IIRC it is 2nd to 3rd that is the often hit one.
I can just about lift the box and move it on my own but I certainly couldn't carry it the length of my drive and I could easily do that with the Cossie box.
I can just about lift the box and move it on my own but I certainly couldn't carry it the length of my drive and I could easily do that with the Cossie box.
22-09-2017, 09:40 AM
#56
I believe the Skyline boxes are actually 25kg heavier. I was told by quite a few sources that the syncros do not like to be rushed so if you shift too quick you can damage them and then you get the crunch on change, IIRC it is 2nd to 3rd that is the often hit one.
I can just about lift the box and move it on my own but I certainly couldn't carry it the length of my drive and I could easily do that with the Cossie box.
I can just about lift the box and move it on my own but I certainly couldn't carry it the length of my drive and I could easily do that with the Cossie box.
Expecting huge inertial force to dissipate quickly at Skyline high rpm is madness.
mine is fine, and i rally it, so mechanical sympathy is the key.
The top and bottom is, they dont break gears, MT75 does.
The alternatives are what you have or other aftermarket gearkits.
But, you dont get active centre diff.
22-09-2017, 09:43 AM
#57
10K+ Poster!!
The problem is the users not the box.
Expecting huge inertial force to dissipate quickly at Skyline high rpm is madness.
mine is fine, and i rally it, so mechanical sympathy is the key.
The top and bottom is, they dont break gears, MT75 does.
The alternatives are what you have or other aftermarket gearkits.
But, you dont get active centre diff.
Expecting huge inertial force to dissipate quickly at Skyline high rpm is madness.
mine is fine, and i rally it, so mechanical sympathy is the key.
The top and bottom is, they dont break gears, MT75 does.
The alternatives are what you have or other aftermarket gearkits.
But, you dont get active centre diff.
22-09-2017, 10:12 AM
#58
I'm sure if you really wanted ( ie ££ ) you could adapt the Skyline transfer case/drive onto the Ford boxes to allow you control over the centre diff.
22-09-2017, 11:14 AM
#59
10K+ Poster!!
As you say, I think that would be £££££ and it is a brave move when my box already cost me £4.5k all in to then start experimenting and chopping (albeit the case is standard MT75 with just a spacer on the Oppliger "long" box)