Back to shop ↗
THE HOLDEN COMMODORE FORUM

HOLDCOM Community

Built around the cars. Kept alive by the people.

+ Start a discussion
Holden Commodores gathered at Holdcom
Forum Home›General discussion
General discussion

Running 10s in manual vlt

Started by 251NFL · 19 Apr 2012 · 57 replies

Preserved from CalaisTurbo. Original authors and dates are shown; archived members are not current Holdcom accounts. View original archive ↗

XCHASEArchived member
Quote: Originally Posted by jbonez [View Post] What power are you making & what have you done in the rear end ? Bit over 650hp. Rear end is a built Borg Warner 31 spline axels with a full spool.
0 likes
FLY-03LArchived member
boost and lots of it
0 likes
vltnitronArchived member
I have run a 10.2 at 139 with my r33 gearbox, never had 1 box issue and i was running redline oil... But did break 3 tailshafts but 2 were just standard two piece shafts and the one piece shaft was made out of cheese by hardy spicer for me.. 1.52 60ft All up had run nearly 30 launches down the 1/8 and 1/4 mile. Car had 35/40 turbo on 24-25psi on pulp with octane booster. Made 450kw at hubs on a hub dyno and 385rwkw on the mainline rollers
0 likes
251NFLArchived member
thats the exact box im getting made up...i tried addin ya on facebook man wanted to ask u few things about it...u was going to go crio but dave convinced me that if u want to have piece of mind get the striaght cut gears... Quote: Originally Posted by XCHASE [View Post] Id been chasing 10's for a couple of years and having good SA rivalry between the Manual record holder here in SA ive wanted to take his position. Its taken a lot of time, money and patience. Im slowly getting closer to his time of 10.24@139 if my memory serves correctly. In the process ive done numerous damage.... I blew 2 R33 Box's and colapsed the rear end and bent tailshafts before i got a fully built PAR gearset gearbox made by Mr Transmissions. (whos in my sig) So far the box has seen about 40 passes and dozens of powerskids. Its still going strong. Ive been hassled and criticised for sticking with a manual box. But IMO if i went Auto id sell up and move on. Its a straight cut box with syncro's. Best pass so far is a 10.6@135mph. Im still chasing a lower number before it gets gas. My intentions to run a 9 second pass then retire back to the circuit. My pass on Youtube. http://www.youtube.com/watch?v=muzOMmJq6Nc
0 likes
TroyVKArchived member
Getrag Toyota 6spd runs 8s in a heavy ass supra That's a std unopened box! Gotta love how Toyota over engineer everything How hard would it be to convert 1 of them to fit an rb? Although there not cheap! 3500 just for the box
0 likes
calais to4 meArchived member
Thats a good point troy id imagine most would run the gauntlet as its a fair outlay
0 likes
jbonezArchived member
Quote: Originally Posted by vltnitron [View Post] I have run a 10.2 at 139 with my r33 gearbox, never had 1 box issue and i was running redline oil... But did break 3 tailshafts but 2 were just standard two piece shafts and the one piece shaft was made out of cheese by hardy spicer for me.. 1.52 60ft All up had run nearly 30 launches down the 1/8 and 1/4 mile. Car had 35/40 turbo on 24-25psi on pulp with octane booster. Made 450kw at hubs on a hub dyno and 385rwkw on the mainline rollers Did you have like adjustable upper trailing arms setup when you were destroying tail-shafts? ---------- Post added 21-04-12 at 18:21 ---------- I think the 6 speed getrag similar box to the R34 6 speed & M3 Boxes as well Good bit of gear thats for sure.
0 likes
Jet R31Archived member
Quote: Originally Posted by TroyVK [View Post] Getrag Toyota 6spd runs 8s in a heavy ass supra That's a std unopened box! Gotta love how Toyota over engineer everything How hard would it be to convert 1 of them to fit an rb? Although there not cheap! 3500 just for the box lol, i have been telling people that for yrs, **** a dogbox POS, just make a bellhousing and buy a supra box, they never break gears, its pointelss to fit dog gears to them..its not the weak link the case warps first if i remember correctly and they where talking about bracing it.. and $3500 is **** all compared to a dogbox..and the maintenence..lol ---------- Post added 21-04-12 at 20:03 ---------- Quote: Originally Posted by jbonez [View Post] Did you have like adjustable upper trailing arms setup when you were destroying tail-shafts? ---------- Post added 21-04-12 at 18:21 ---------- I think the 6 speed getrag similar box to the R34 6 speed & M3 Boxes as well Good bit of gear thats for sure. No they are not..r34 boxes are made of glass..lol
0 likes
sherman89Archived member
All rb boxs are glass. Stock gears you strip, if you don't strip gears you break selector forks, you buy billet selectee you strip gears.. I just kept a spare 25 box and once I'd broken a few normally had enough spares to build a good box . Good part of the reason I sold the car was because of broken gearboxes causing lack of motivation... Some original photos have not been recovered yet.
0 likes
vltnitronArchived member
Quote: Originally Posted by jbonez [View Post] Did you have like adjustable upper trailing arms setup when you were destroying tail-shafts? yea i did have adjustable's. supra box is the go. I looked in to it but the price of buying the box and another decent clutch/shaft sent me down the auto path, ohh and the Andra bell housing requirement's
0 likes
HYPED6Archived member
Hmmm....... I have had this discussion with a customer......... Google a drag calc....supra...... with a manual....... and see what actually needs to happen to run an 8. Its not pretty. Its impressive but not pretty. We haven never... and I mean never broken a CA18 gearbox...... not our drift cars, not our drag cars... ever broken a box. They have done several seasons drifting and massive wheel stands and street runs and never broken a box. Should we all now put CA boxs in supras? I think not. Everyone is more than happy to tell you about the success they have with a certain product..... do they tell you the 19 failures they suffered until it all worked? I'd think not. I busted 3 GTR box's in 2 weeks. Got one cryo treated and changed my driving style and haven't done one since,,,,,, I bet its not the treating that saved my box
0 likes
Jet R31Archived member
Those Ca and sr boxes more commonly break from axle tramp from what i have seen.. lol at driving style, i never broke a stock toyota K-40 motor gearbox in my turbo 5k in 10yrs from 140 to 150rwkw, never broke a ke10 axle either in 10yrs until i didn't put the tyres down to 10psi one night and it tramped hard ONCE (well tramped hard from 60km to 160km )and snapped both axles..lol My brothers 11 sec gemini has never busted a box either, but i have mates that will blow up anything with a drive down to the shop they are that rough and when they have driven my cars i have waited for the gearlevel to snap in half and the clutch pedal to get pushed through the firewall..haha But with vl's, the uni joints are the weak point, i have seen corrans aftermath, theres a bigger uni assembly you can use from the borg warners in falcon XR/Xt's, but in all reality..you need a 9 inch to go super fast in a manual vl or TRY to get some billet stuff made up..going fast constistently with a manual vl is a rich mans sport..I'll stick to the auto's.. cheers darren ---------- Post added 22-04-12 at 11:00 ---------- I put this in another thread, but this is what the major supra manual players use http://magnusmotorsports.com/product...ontrol-device/ (http://magnusmotorsports.com/products/clutch-products-services/launch-control-device/) or build your own http://www.summitracing.com/parts/TIL-90-5000 cheers darren
0 likes
TroyVKArchived member
Why would u put a box that's suited to a 4cyl behind a 6cyl? The v160/161 boxes are damn near bulletproof! Many an 8sec pass has been run on them But it's extremely difficult! Lightening fast changes, extremely good launching, 1000+rwhp, good suspension ect There's a lot more to it than just the box!
0 likes
xAsh-Archived member
I'm sure this has been talked about before, but what is the largest turbo you could run on a manual RB30 without it falling off the surge line between shifts? Something around an 85-90mm turbine wheel? 76-80 compressor inducer?
0 likes
TroyVKArchived member
That's a good question I'd have a guess and say prob a 4294? I know with a 2j it seems to be an 8280
0 likes
Jet R31Archived member
thats a very good question and one know one will really know the answer to..haha, nitrous is the solution..lol cheers darren
0 likes
xAsh-Archived member
Quote: Originally Posted by TroyVK [View Post] That's a good question I'd have a guess and say prob a 4294? I know with a 2j it seems to be an 8280 When you say 4294, are you talking about the Garrett small GT42? If so, i think you could go at least GT4202, if not bigger. Im keen to give a PT7685 from precision a go, I just want to see if Mark at Billet turbos can make one in the same size, before i order it from the states.
0 likes
ATMO_BT1Archived member
A lot of it could be the driver too, I watched Anthony run a flat 10.0 twice back to back in a budget customers car with factory manifolds, 3540 and 5 speed. Didn't have a cage so afaik it never went back again
0 likes
TroyVKArchived member
Yeah mark could build that I'd say Now that he does his own billet comp wheels
0 likes
madrexArchived member
Talking about turbo billet wheels we did some dyno testing on sat with some new borgwarner turbos vs garret both cars put on 30 to 40 hp on the same boost with the borgy it was a gt42 vs same size in a borgwarner and gt47 and same size in borgwarner i was amazed there new billet wheels look flash too and the borgwarners wernt even rollerbearing and the garrets where just something interesting
0 likes
Sign in or create an account to reply. New members are welcome—no purchase or old CT account needed.

Who’s online

0 members and 1 guest active in the last 15 minutes

No signed-in members active right now. Guests are welcome to browse.

Visitors Today8

33,594 threads, 484,053 posts and 5,128 images saved from CT

98.1% of indexed threads saved