|
Guillotine
Original Poster
5,021 posts
133 months
|
...work on the Tussie...I'm keeping it. I done it all now, there's barely a bit that hasnt been stripped cleaned/rebuilt/replaced/updated. So, since I'm keeping it, what to do with it? I'll be doing a few rounds of racing (various series, and ofcourse the odd international before exporting to Oz. Sequential...too expensive per gain. Aero...not yet maybe later.  RV8 5.0? RV8 5.2?? RV8 5.4???  Supercharger.  Too much development work for racing. Ofcourse bang for buck...LS? What do you reckon? What would you do? I have to admit I'm leaning toward the LS but unltimately the RV8 is best for Oz.
|
|
|
7 TVR
1,905 posts
37 months
|
Guillotine said: ...work on the Tussie...I'm keeping it. I done it all now, there's barely a bit that hasnt been stripped cleaned/rebuilt/replaced/updated. So, since I'm keeping it, what to do with it? I'll be doing a few rounds of racing (various series, and ofcourse the odd international before exporting to Oz. Sequential...too expensive per gain. Aero...not yet maybe later.  RV8 5.0? RV8 5.2?? RV8 5.4???  Supercharger.  Too much development work for racing. Ofcourse bang for buck...LS? What do you reckon? What would you do? I have to admit I'm leaning toward the LS but unltimately the RV8 is best for Oz. I think you you should come and drive the LS Griff around Snetterton a few times with me and then make a decision! Whatever you do i'm glad your keeping it, but if your going to bother to really re-build why put limitations on your power? you know you want to!!!
|
|
|
NTEL
4,389 posts
109 months
|
Oz again? Bloody 'ell Andy, you keep promising us that your going to bugger off to Oz but you never do! Do you really mean this time or are you teasing us again  Arn't you too old to go to Oz now?
|
|
|
Guillotine
Original Poster
5,021 posts
133 months
|
I blooody want to go mate...I just cant sell me house! We'll probably go anyway coz I'm getting p155ed off with it all too! 
|
|
|
Guillotine
Original Poster
5,021 posts
133 months
|
Chris...I think thats a great idea! Sorry I can't make Cadwell.
|
Advertisement
|
|
|
NTEL
4,389 posts
109 months
|
I'll buy your house! Now Bugger off!
|
|
|
kg55
700 posts
108 months
|
Guillotine said: I just cant sell me house!  I know a residential landlord in norfolk if thats any help 
|
|
|
450Nick
3,477 posts
81 months
|
I'd supercharge it and increase the capacity.. Surely much less work than putting an LS in - the SC setups are pretty well proven now and make very good numbers with the right ECU control, and the system is very simple - only adds one oil system and a longer belt from a service point of view?
|
|
|
7 TVR
1,905 posts
37 months
|
450Nick said: I'd supercharge it and increase the capacity.. Surely much less work than putting an LS in - the SC setups are pretty well proven now and make very good numbers with the right ECU control, and the system is very simple - only adds one oil system and a longer belt from a service point of view? Have to argue the well proven point Nick as i've yet to see a 5lt run well and have seen many projects cost alot more than an Ls install and are still not right[ not fair to mention names or cars ] Even some of the 4lt conversions i've seen have had serious problems! Thats not to say yours and others have not been on the money. There is more room in a race Tuscan so should not have the same space and heat issues i have seen in some road going TVR's With silly numbers [600+]available with an LS[my bog standard LS3 is 486] i struggle to see how a supercharged RV8 would compare or offer the same level of reliability? You would still be utilizing a 40+year old engine design with similar drivetrain upgrades needed to cope with the extra power. Don't get me wrong i do like SC cars but after talking to people who have gone down that road i don't think it would be the best solution in a race car! Jasons Sag is a work of art but ask him about what it took to get there and an LS becomes very attractive  Look forward to seeing you all at Silverstone
|
|
|
Graham
14,177 posts
153 months
|
Depends what your looking for if its ultimate power then probably an ls and a different box and diff, oh and probably uprights, but then its not much of a tuscan anymore.
I'd tend to stick with either a RV8 or AJP.. there is a very quick law of diminishing returns when you start buggering about with it.. I still think the best way to get my car to go quicker is tuning the driver ...
so stick with the rover and just get plenty of track time..
|
|
|
bill tvr
176 posts
47 months
|
Dave il goe halves with you if you want
|
|
|
Guillotine
Original Poster
5,021 posts
133 months
|
Yep, its a difficult one.
GpA is moving on GpB is small (but fun)
Too much power means lots of development/expense, so we are looking at about 450bhp? That way, the drive train can stay stock(ish) and should do OK in A.
Problem is, to get 450 from a NA RV8 is getting into trick 5.7ish stuff. SC/Turbo will do it, but again development means £££s also not sure about FI for race cars when thinking about lag/enginebraking etc.
So, Tim Tells me his 5.2 is around 400bhp and my old Griff 5.0 also made 400 before detuning. Is that it...B? (Before anyone says it...an AJP is out for onvious reasons)
Chevy will do 480 stock...
|
|
|
tbdgriff500
1,062 posts
72 months
|
hi Andy why is ajp out, there must be hundreds of old cerbera road engines out there, are they that much different to sort to full race spec and a good 430-450 bhp therefore keeping it tuscan original, how many ls tuscans are that reliable, with more power comes more problems and as Graham has said you need to be able to handle the bends as well as the straights, drive it like you stole it, enjoy it as it is, and kick everyones ass in oz, spend the money you were going to spend on tyres and a holiday for the wife and kids, you will all be happier in the end, there will always be a faster car, but at some point you will realise that these need to be left as they were and ragged as often as possible, unless of course you have won the lottery! in that case knock yourself out mate!! see you at sillystone, not long now 
|
|
|
Guillotine
Original Poster
5,021 posts
133 months
|
You might not have noticed Tim, but I do drive it like I stole it! 350 against 400 means an upgrade, so nows the time to see whats about. If I'm spending cash...may as well go for abit more and try to go A. As for AJPs, no longevity and its cheaper to get one thats been done ie an A car. {and I'm on holiday after S/Stone  }
|
|
|
tbdgriff500
1,062 posts
72 months
|
i know you do mate!, i fly out on the 31st but back on the 10th, hope your back intime for the rock! got to keep the wife happy! but surely it must be cheaper to sell thre rv8 car and buy another ajp or Ls car than converting it over! unless of course you have a big Colin on your side, good luck with what ever you choose to do but you will see out the season as you are won't you please!!
|
|
|
Guillotine
Original Poster
5,021 posts
133 months
|
Oh Yes, this is for the winter refurb, prior to export...as it were.
Not sure whats happening after SStone though and I fancy an A car for OP.
|
|
|
Boosted LS1
13,450 posts
129 months
|
Unless you buy an internally uprated LS it'll break and it's a very expensive conversion. They have thin piston crowns. I've yet to come across a rover with a split liner and cracked piston but that's not uncommon with an LS if the installation or management isn't spot on. You can easily boost a rover that's been fitted with some low compression pistons and had a crank balance. The rest of the engine can remain stock but you'll need an uprated clutch.
|
|
|
450Nick
3,477 posts
81 months
|
Exactly my thoughts, if you rebuilt the motor to a short stroke 5L with low comp dished pistons, you can pretty much keep the rest stock and stick on a blower for not a lot of outlay. The exhaust, engine mounts, rad, pipe work etc can all stay the same saving you loads in fabrication costs. If you stick a proper Ecu on there and have it mapped by someone who knows what they're doing then you'd easily take it to 450 bhp and as g says, retain the stock drivetrain. The power curve remains the same and engine braking/throttle response is pretty much unaffected, giving you good engine characteristics for track driving. With proper installation and heat lagging there is very little potential for excess heat, and just about all the design (bar a custom intake) has already been tried and tested. For me it's a sound choice, and produces reliable figures provided you don't get greedy with the boost, and have a sound engine and management to begin with. Nearly all the problems I've seen on road cars stem from installation issues, or people trying to make it work with the 14cux, or have tried to build super spec engines and changed far too much in one go, resulting in a list of niggles that's difficult to trace due so many changes being made at once.
Keep it simple and get the right bits first time and it should take no longer to set up than putting a set of throttle bodies on a rebuilt motor. With an LS you need to change far more, and buy the motor, and the exhaust, intake, engine mounts, the weight goes up, there are more cooling issues, you need a new loom, Ecu, chassis mods... I looked at putting one in mine but decided it was too much work above just buying the engine in the end. I ended up using an ajp because I had most of an engine already and all the bits to put it in, but I would have gone for a blown rv8 if I couldnt make the ajp work. So I wouldn't write it off totally, the are obviously drawbacks to all choices but I don't think a blower has any more than rival choices. You also know the rv8 very well, so diagnosing issues and repairs shouldn't be any more difficult than they are now.
|
|
|
wadsapple
1,153 posts
56 months
|
I Totally agree with you nick about the LS instalation.many many many thousands more ontop of the engine cost to get one into a Tuscan and working well.As i have just done all that, all by the bit when i said " and working well ".
|
|
|
450Nick
3,477 posts
81 months
|
wadsapple said: I Totally agree with you nick about the LS instalation.many many many thousands more ontop of the engine cost to get one into a Tuscan and working well.As i have just done all that, all by the bit when i said " and working well ". Yeah this is the major point - it would be the same problem sticking any other engine in there that isn't very well understood, you're always going to have a lot of time refining the design when you change so much at once. I'm not knocking the LS engine its self at all, and hope to put one in a car be it road or race one day and make silly power, but it will take a long time and cost a lot of money I expect, so I'll leave it a few years from now..
|
|