Jellybean Posted October 1, 2015 Share Posted October 1, 2015 Come on dude , enough Chit chat and more Video's Quote Link to comment Share on other sites More sharing options...
Luxluc Posted October 1, 2015 Author Share Posted October 1, 2015 Come on dude , enough Chit chat and more Video's :d Quote Link to comment Share on other sites More sharing options...
Krister Posted October 1, 2015 Share Posted October 1, 2015 (edited) I was waiting for you to comment mate ; you have massive experience in your numerous races over at your's. I get your point. The problem is that we maxed out the turbo at 1.9 bar. I know that more displacement and VVTi helps spool faster ; however, I don't want to go the stroker route. Do you think nitrous will help spool the turbo enough at that low revs? - - - Updated - - - Yes John Well if you want more power, going bigger on turbo will help of course. But you will be shifting the power band to the right and make boost on 2nd gear even higher than now. You can hit the nitrous at 3000rpm, so it would help you a lot. I just upgraded to a VVTI head during the winter and it made a dramatic change to the low end and spooling of the turbo. It's rather a big job to change it now, but if you ever change your setup, I highly recommend it. I also did a stroker crank, but I feel the VVTi helped more. So weighing the options you have, I would go the nitrous route and possibly upgrade the turbo if you want more power or just spray the whole mile or just the higher gears. Edited October 1, 2015 by Krister (see edit history) Quote Link to comment Share on other sites More sharing options...
Krister Posted October 1, 2015 Share Posted October 1, 2015 (edited) Since at least 6-7 years, I have had a scrunching noise when shifting from 1st to 2nd gear under heavy boost. That didn't bother me too much as I don't launch like crazy at the red lights. During the last 2 runs on Sunday, I had a scrunching noise when shifting hard from 2nd to 3rd under full boost. This morning, I took the Supra to go to work. The box shifts fine from 2nd to 3rd when accelerating "normally", but there is a scrunch when shifting under boost. The syncro rings on 2nd and 3rd need replacement. I have been thinking about a Jacks transmission upgrade for some time now ; time to get that 20 year old V160 overhauled The box will be send to the states over winter for a stage 2 or stage 3 upgrade. You sure that's the way to go? I would google it a little, I read on SF that someone wasnt very happy with the Stage 3 build. I personally think it would be more cost efficient and easier to sell your current box and get a low mileage used box. Also a transmission shop can change the synchros in a Getrag, I've had it done a couple of times here locally. You just need to have pullers made for the Getrags. Edited October 1, 2015 by Krister (see edit history) Quote Link to comment Share on other sites More sharing options...
chazuk Posted October 1, 2015 Share Posted October 1, 2015 Nice vid's Luc seriously that c63 how can a car with the same power pull away like that Quote Link to comment Share on other sites More sharing options...
Luxluc Posted October 1, 2015 Author Share Posted October 1, 2015 Well if you want more power, going bigger on turbo will help of course. But you will be shifting the power band to the right and make boost on 2nd gear even higher than now. You can hit the nitrous at 3000rpm, so it would help you a lot. I just upgraded to a VVTI head during the winter and it made a dramatic change to the low end and spooling of the turbo. It's rather a big job to change it now, but if you ever change your setup, I highly recommend it. I also did a stroker crank, but I feel the VVTi helped more. So weighing the options you have, I would go the nitrous route and possibly upgrade the turbo if you want more power or just spray the whole mile or just the higher gears. You are right. I already talked to my tuner about VVTi. The nitrous would definitely help to get better off the line. You sure that's the way to go? I would google it a little, I read on SF that someone wasnt very happy with the Stage 3 build. I personally think it would be more cost efficient and easier to sell your current box and get a low mileage used box. Also a transmission shop can change the synchros in a Getrag, I've had it done a couple of times here locally. You just need to have pullers made for the Getrags. I talked to 2 people who had the Stage 1 (which I guess might be more than enough for my goals) ; they were very impressed by the work. You are right about the syncro's though ; apart from the scrunching in the gears 2 and 3, everything else is fine. I will talk to my local garage to see what they can do. Cheers Luc Quote Link to comment Share on other sites More sharing options...
johnny g Posted October 1, 2015 Share Posted October 1, 2015 You are right. I already talked to my tuner about VVTi. The nitrous would definitely help to get better off the line. I'd not change the box, I'd certainly look at a VVTi option, though. Maybe you could afford to go slightly larger on your A/R or even a step up on turbo size. The VVTi should bring 500pm off that. Quote Link to comment Share on other sites More sharing options...
Krister Posted October 1, 2015 Share Posted October 1, 2015 Yeah, I got 500rpm better spool with the VVTi. Torque is also increased before that. Quote Link to comment Share on other sites More sharing options...
Luxluc Posted October 1, 2015 Author Share Posted October 1, 2015 Yeah, I got 500rpm better spool with the VVTi. Torque is also increased before that. My non-VVTi head is a stage 5 race head. What did you do to your VVTi head ... any polishing, oversize valves etc? Quote Link to comment Share on other sites More sharing options...
Krister Posted October 1, 2015 Share Posted October 1, 2015 Yeah, it's ported, +1mm oversize valves, cnc ported combustion chambers, ferrea guides, shimless buckets, Titan 272 cams, Supertech dual valve springs. Quote Link to comment Share on other sites More sharing options...
Luxluc Posted October 1, 2015 Author Share Posted October 1, 2015 Yeah, it's ported, +1mm oversize valves, cnc ported combustion chambers, ferrea guides, shimless buckets, Titan 272 cams, Supertech dual valve springs. Wow. And the 272 still keep the fast spool. Impressive mate. Quote Link to comment Share on other sites More sharing options...
Luxluc Posted October 2, 2015 Author Share Posted October 2, 2015 In contacted Jack's transmission for a stage 1 on my gearbox. Although it's only a 3rd gear syncro issue, I have nobody over here who is keen enough to open a V160. So, it will be sent to the specialists in the US. Quote Link to comment Share on other sites More sharing options...
Fitz Posted October 2, 2015 Share Posted October 2, 2015 In contacted Jack's transmission for a stage 1 on my gearbox. Although it's only a 3rd gear syncro issue, I have nobody over here who is keen enough to open a V160. So, it will be sent to the specialists in the US. Can't go wrong with Jack's Transmissions mate. Seen some of their work Quote Link to comment Share on other sites More sharing options...
James Posted October 2, 2015 Share Posted October 2, 2015 If you wish to try a VVTi, we can easy swap engines Luc. I'll even throw in the T88 Quote Link to comment Share on other sites More sharing options...
Jellybean Posted October 2, 2015 Share Posted October 2, 2015 Out of Curiosity , what price is Jacks transmission in comparison to buying a new gearbox; few ££ on shipping? Quote Link to comment Share on other sites More sharing options...
Luxluc Posted October 2, 2015 Author Share Posted October 2, 2015 Out of Curiosity , what price is Jacks transmission in comparison to buying a new gearbox; few ££ on shipping? Brand new gearbox is around 8000 USD ; Jacks complete overhaul comes in at 2000 USD. - - - Updated - - - If you wish to try a VVTi, we can easy swap engines Luc. I'll even throw in the T88 I would really like to upgrade my head to VVTi : You can sell the T88 on ebay Quote Link to comment Share on other sites More sharing options...
Jellybean Posted October 2, 2015 Share Posted October 2, 2015 Thanks Dude , thats reasonable ; keep us posted how you get on Quote Link to comment Share on other sites More sharing options...
Luxluc Posted October 15, 2015 Author Share Posted October 15, 2015 The box is off my Supra and on it's way to the other side of the globe. I will post some pics ASAP ; I know that you guys want pics, although a box-less Supra ain't very nice Quote Link to comment Share on other sites More sharing options...
Kaan W Posted October 15, 2015 Share Posted October 15, 2015 That's a good price for complete overhaul, does the box have to be in good working condition to begin with? Quote Link to comment Share on other sites More sharing options...
Jellybean Posted October 15, 2015 Share Posted October 15, 2015 I did not keep up to date on Jacks Transmission but I am sure you did your research and there market is mainly US customers Did anybody have any issues with them,customer service all good, quick turnaround on work, what box currently is running the highest mileage after rebuild? Quote Link to comment Share on other sites More sharing options...
johnny g Posted October 15, 2015 Share Posted October 15, 2015 If you're going VVTi, Luc, then go DBW on the throttle to? Bring the car right up to date. Quote Link to comment Share on other sites More sharing options...
Luxluc Posted October 15, 2015 Author Share Posted October 15, 2015 That's a good price for complete overhaul, does the box have to be in good working condition to begin with? My box is in good condition ; only syncro on 3rd needs replacing. I did not keep up to date on Jacks Transmission but I am sure you did your research and there market is mainly US customers Did anybody have any issues with them,customer service all good, quick turnaround on work, what box currently is running the highest mileage after rebuild? I have had contact with guys in Europe. They told me the service at Jacks and their work was spot on. If you're going VVTi, Luc, then go DBW on the throttle to? Bring the car right up to date. I know John. The only downside is that I cannot only replace the head. The VVTi block is also slightly different as the oil galleries are larger on the VVTi block. Going VVTi would mean a complete new engine. I'm not sure I will do that. Quote Link to comment Share on other sites More sharing options...
Brazil Posted October 15, 2015 Share Posted October 15, 2015 My box is in good condition ; only syncro on 3rd needs replacing. I have had contact with guys in Europe. They told me the service at Jacks and their work was spot on. I know John. The only downside is that I cannot only replace the head. The VVTi block is also slightly different as the oil galleries are larger on the VVTi block. Going VVTi would mean a complete new engine. I'm not sure I will do that. Have you spoken to SRD, I am sure its possible to do so you could even use a facelift N/A block I believe. Quote Link to comment Share on other sites More sharing options...
Luxluc Posted October 15, 2015 Author Share Posted October 15, 2015 I talked to Lee about it Luiz. He advised me against using the early non-VVTi blocks when going VVTi head. Quote Link to comment Share on other sites More sharing options...
johnny g Posted October 15, 2015 Share Posted October 15, 2015 My box is in good condition ; only syncro on 3rd needs replacing. I have had contact with guys in Europe. They told me the service at Jacks and their work was spot on. I know John. The only downside is that I cannot only replace the head. The VVTi block is also slightly different as the oil galleries are larger on the VVTi block. Going VVTi would mean a complete new engine. I'm not sure I will do that. When my car was built, I had a pre VVTi block with a VVTi head. No problem there as far as I was aware. Lee made the oil feed up for the VVTi solenoid. EDIT: Just seen above. Quote Link to comment Share on other sites More sharing options...
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