Discussion
Hi All,
Have the itch, having owned the Tuscaris for almost a year , I'd like to give it a bit more poke. The 4.3 / 4.5 engine upgrade will be done in a couple of years once the present engine warranty runs out, but I fancy a CR box if it's worth it. Read loads on here and majority think it's a good upgrade. Sadly I live in London so a fair bit of traffic. Has anyone done the change on their sagaris recently and have they been thrilled with it or regretted it. Would value your thoughts!
Many thanks
Umeer
Have the itch, having owned the Tuscaris for almost a year , I'd like to give it a bit more poke. The 4.3 / 4.5 engine upgrade will be done in a couple of years once the present engine warranty runs out, but I fancy a CR box if it's worth it. Read loads on here and majority think it's a good upgrade. Sadly I live in London so a fair bit of traffic. Has anyone done the change on their sagaris recently and have they been thrilled with it or regretted it. Would value your thoughts!
Many thanks
Umeer
http://www.gearboxman.co.uk/infot5.html
Did a nice CR/Helical conversion on my box. Not cheap, but good.
Did a nice CR/Helical conversion on my box. Not cheap, but good.
I rebuilt my box with C/R gears and love it. Yes first is obviously higher but not to the point I'm stalling it or struggling with it. My Tuscan now does over 60 in first. The car feels much quicker when pressing on. When you change up the engine is still in a strong part of the power band. The best way I find to describe it is it feels like a sports motorbike box.
Cost wise obviously my labour was fortunately free. The gear kit was around £600 from Readman Racing and I spent nearly that again on bearings, seals, shims, uprated synchros, lay shaft support plate etc. IIRC John (Readman) quoted a really sensible price for actually building a box. He rebuilt my diff a couple of years ago too and that was around £4/500 including parts.
Cost wise obviously my labour was fortunately free. The gear kit was around £600 from Readman Racing and I spent nearly that again on bearings, seals, shims, uprated synchros, lay shaft support plate etc. IIRC John (Readman) quoted a really sensible price for actually building a box. He rebuilt my diff a couple of years ago too and that was around £4/500 including parts.
Andy_mr2sc said:
I rebuilt my box with C/R gears and love it. Yes first is obviously higher but not to the point I'm stalling it or struggling with it. My Tuscan now does over 60 in first. The car feels much quicker when pressing on. When you change up the engine is still in a strong part of the power band. The best way I find to describe it is it feels like a sports motorbike box.
Cost wise obviously my labour was fortunately free. The gear kit was around £600 from Readman Racing and I spent nearly that again on bearings, seals, shims, uprated synchros, lay shaft support plate etc. IIRC John (Readman) quoted a really sensible price for actually building a box. He rebuilt my diff a couple of years ago too and that was around £4/500 including parts.
I used Readman Racing for upgrading mine to a CR box, and I can confirm the costs were very reasonable (relatively speaking). I had a refurbed 3.73 hydratrack diff and Quaife LSD fitted at the same time (So no longer hydratrack..). This in combination with the 4.3 is perfect for me.Cost wise obviously my labour was fortunately free. The gear kit was around £600 from Readman Racing and I spent nearly that again on bearings, seals, shims, uprated synchros, lay shaft support plate etc. IIRC John (Readman) quoted a really sensible price for actually building a box. He rebuilt my diff a couple of years ago too and that was around £4/500 including parts.
I'll be interested in following this one. My 4.5 rebuild is about a month away from coming back and I too had thought that... but I hear cruising in 5th is higher revving etc my thoughts are to go big tooth Wide ratio upgrade and just use 2nd to take off (there should be enough torque lol)
Also after driven a 4.7 with that set up I never felt the need to change down below 3rd when crawling.
I look forward to hearing more chaps.
Also after driven a 4.7 with that set up I never felt the need to change down below 3rd when crawling.
I look forward to hearing more chaps.
I'm also thinking about an engine upgrade, Str8six did the original rebuild and still hads 2 years warranty left on it. Always looking for more torque, afaik. There doesn't seem much price difference between 4.3 and 4.5 so do people prefer the 4.3 for other reasons ?! Driveability?! Road / traffic conditions !?
Again would value thoughts!
Umeer
Again would value thoughts!
Umeer
umeerw said:
I'm also thinking about an engine upgrade, Str8six did the original rebuild and still hads 2 years warranty left on it. Always looking for more torque, afaik. There doesn't seem much price difference between 4.3 and 4.5 so do people prefer the 4.3 for other reasons ?! Driveability?! Road / traffic conditions !?
Again would value thoughts!
Umeer
I think there's a £2k price difference between the 4.3 and 4.5.Again would value thoughts!
Umeer
I am still enjoying my 4.3 a lot, two years after the conversion. For the Tamora, I think it is perfect for open top hooning. For a coupe, I am sure it would be great too, but some seem to want even more power (but then again, we always want more power, for some, 1000bhp wouldn't be enough..). However, for me, I have never once been found wanting, thinking I could do with a little more oomph, what I have is plenty. I have found that the Quaife LSD also seems to do a better job in keeping the rear in check when putting the foot down out of corners.
I like the CR ratios too, as I can plod along in built up areas in 1st, sometimes 2nd gear and, because of the extra torque, when I come out of the 30mph zones, I can put my foot down for instant acceleration.
I also had a CR box in my first Tam, a 3.6. Some say it makes the car more sluggish, but I never found this at all (even for a 'lowly' 3.6). In fact, it was because I loved that box so much in my first Tam, I knew I would have to have it again in my current Tam. For the 4.3, I found that the standard ratio in 1st was almost redundant, having to change to 2nd immediately when pulling away.
That's my experience anyway, I am sure others may have different views..
chris watton said:
Jhonno said:
chris watton said:
It is only the first three gears that change, forth and fifth are the same ratio as the standard box, as far as I am aware.
5th is shorter also.0.8:1 standard
0.87:1 CR
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