Title: big bhp engine question
Post by: ady on August 13, 2005, 01:39:46 PM
Post by: ady on August 13, 2005, 01:39:46 PM
Hello people..im currently looking round all the importers as ive always wanted a rx7..my plan is to buy a standard example and then do the mods i want to the engine..as ive previously owned skylines and cosworth\'s i know that the standard power wont keep me happy for long so im hoping to go for between 450-500bhp.
My question relates to what sort of money this type of rebuild will cost me and who is generally considered to be the best for big hp rebuilds as i notice quite a few companys at the top of this page..i have done extensive reading on the car with the help of this board and i deffo have my heart set on one as imo no car looks as good as a rx7.
I just want a very quick road car as im not really in to track or drag events but im the type of person who always wants the extreme :D
Your comments would be appreciated :3gears-rh
My question relates to what sort of money this type of rebuild will cost me and who is generally considered to be the best for big hp rebuilds as i notice quite a few companys at the top of this page..i have done extensive reading on the car with the help of this board and i deffo have my heart set on one as imo no car looks as good as a rx7.
I just want a very quick road car as im not really in to track or drag events but im the type of person who always wants the extreme :D
Your comments would be appreciated :3gears-rh
Title: big bhp engine question
Post by: John Yorke on August 13, 2005, 03:30:20 PM
Post by: John Yorke on August 13, 2005, 03:30:20 PM
To find 500 fwhp is not to hard these days, seems to be the norm if you convert to a single Turbo [largish], rebuilt engine [with extended porting], uprated intercooler, better fueling [uprated pump, FPR, 1200 / 1680 secondary injectors] uprated ecu and GOOD MAPPING, expect to invest 10k to get the RIGHT job done, \'course it will be cheaper if you can do some DIY.
Having got that sort of power you need to be looking at the drive train, brakes and handling, yet another bucket full of cash, if you dont upgrade the rest you will be wasting your time, so expect another 5k for a good job.
As to tuners, dont know where you are so do your research, the likelyhood is if you use any of the tuners advertised on this forum you will get a good job [they would be wasting there time advertising on here if they were c##p]
Hope this helps.
Having got that sort of power you need to be looking at the drive train, brakes and handling, yet another bucket full of cash, if you dont upgrade the rest you will be wasting your time, so expect another 5k for a good job.
As to tuners, dont know where you are so do your research, the likelyhood is if you use any of the tuners advertised on this forum you will get a good job [they would be wasting there time advertising on here if they were c##p]
Hope this helps.
Title: big bhp engine question
Post by: ady on August 13, 2005, 03:54:54 PM
Post by: ady on August 13, 2005, 03:54:54 PM
thanks for that...i have seen already done cars advertised but i suppose its a gamble as the history on these cars can be sketchy if they are a fresh import...10k doesnt sound to bad for that kind of power..
What sort of large singles would do that kind of power as most of the cars ive seen have t78\'s and they have always been quoted about 450 ish?
What sort of large singles would do that kind of power as most of the cars ive seen have t78\'s and they have always been quoted about 450 ish?
Title: big bhp engine question
Post by: John Yorke on August 13, 2005, 05:11:10 PM
Post by: John Yorke on August 13, 2005, 05:11:10 PM
GT35, TO4R, T51KIA, they would all make 500 required!
Running 1 / 1.2bar
Ady send me an e-mail to john.yorke@blueyonder.co.uk
Cheers
Running 1 / 1.2bar
Ady send me an e-mail to john.yorke@blueyonder.co.uk
Cheers
Title: big bhp engine question
Post by: Warthog on August 13, 2005, 05:21:03 PM
Post by: Warthog on August 13, 2005, 05:21:03 PM
Good luck with your research :flamed
Title: big bhp engine question
Post by: ady on August 13, 2005, 06:04:09 PM
Post by: ady on August 13, 2005, 06:04:09 PM
john u have mail
Title: big bhp engine question
Post by: Warthog on August 13, 2005, 06:13:44 PM
Post by: Warthog on August 13, 2005, 06:13:44 PM
:burnout Which John?????????????
Title: big bhp engine question
Post by: sdminus on August 13, 2005, 06:22:02 PM
Post by: sdminus on August 13, 2005, 06:22:02 PM
You could always buy clives turbo. That has 600 hp potential
Scott
Scott
Title: big bhp engine question
Post by: Carl on August 13, 2005, 06:30:50 PM
Post by: Carl on August 13, 2005, 06:30:50 PM
Clives turbo has more than 600hp potential.
Regards
Carl
Regards
Carl
Title: big bhp engine question
Post by: Timrxmotors on August 13, 2005, 08:10:59 PM
Post by: Timrxmotors on August 13, 2005, 08:10:59 PM
Shame you never found it. :wave
Title: big bhp engine question
Post by: Carl on August 13, 2005, 08:14:22 PM
Post by: Carl on August 13, 2005, 08:14:22 PM
About time you joined up Tim!
Regards
Carl
Regards
Carl
Title: big bhp engine question
Post by: Carl on August 13, 2005, 08:16:34 PM
Post by: Carl on August 13, 2005, 08:16:34 PM
Quote from: TimrxmotorsShame you never found it. :wave
We did get 400hp at the hubs at only 6000 rpm on 13psi boost,so that really shows the potential of this turbo.
We only mapped it to 6000 rpm as we ran out of time on the day,but it would have probably reached a fair bit more at that same psi at higher rpm.
Regards
Carl
Title: big bhp engine question
Post by: John Yorke on August 13, 2005, 08:42:28 PM
Post by: John Yorke on August 13, 2005, 08:42:28 PM
Quote from: TimrxmotorsShame you never found it. :wave
LOL prob under the bonnet somewhere :o
Title: big bhp engine question
Post by: 20B_boy on August 13, 2005, 09:45:36 PM
Post by: 20B_boy on August 13, 2005, 09:45:36 PM
Any one have any pics of GT42 installs that have made this kind of HP please?
Title: big bhp engine question
Post by: chrisBoid on August 13, 2005, 10:22:28 PM
Post by: chrisBoid on August 13, 2005, 10:22:28 PM
Had a quick scour of the web, but didn\'t turn anything solid up.
I did however find an interesting RX-7 dyno results site, allows direct comparison of dynos (on the same chart): - http://dyno.zeroglabs.com/dyno.php
I did however find an interesting RX-7 dyno results site, allows direct comparison of dynos (on the same chart): - http://dyno.zeroglabs.com/dyno.php
Title: big bhp engine question
Post by: ady on August 14, 2005, 01:28:14 AM
Post by: ady on August 14, 2005, 01:28:14 AM
any details on this 600hp one ?
Title: big bhp engine question
Post by: g11ary on August 14, 2005, 02:01:34 AM
Post by: g11ary on August 14, 2005, 02:01:34 AM
Quote from: 20B_boyAny one have any pics of GT42 installs that have made this kind of HP please?
Hope its not another snide comment, most people probably only know of 2 in the uk, Gary Goodings and Clives, so probably no install piccys available.
Plenty have been worked on in Auz.
So although not been done here in the uk its is possible with this turbo, or do we think otherwise?
For those that want info on GT42\'s just go on here and search for them.
Search hard enough and there are some 700 bhp ones here, one talks of a 600 in a 12a.
Im sure if searched there would be lots on rx7.com as well.
http://ausrotary.dntinternet.com/forums/viewtopic.php?t=53662&postdays=0&postorder=asc&highlight=gt42&start=80
http://ausrotary.dntinternet.com/forums/viewtopic.php?t=69114&postdays=0&postorder=asc&highlight=gt42&start=20
http://www.rx7club.com/showthread.php?t=443840&highlight=gt42
Title: big bhp engine question
Post by: chrisBoid on August 14, 2005, 11:19:04 AM
Post by: chrisBoid on August 14, 2005, 11:19:04 AM
Thanks Gary,
I can\'t believe I wasn\'t already registered to AusRotary!
Seems to me that this turbo is easily capable of some very powerful figures, but to get the most out of it, you need a fortified engine to take the boost - perhaps that\'s what is putting people off going for Clive\'s, knowing they\'d have to shell out another £3k for the engine work? Or is it feasible to run low boost through such a huge turbo?
Here\'s a pic for the lazy :) This engine has produced 409 @ 14psi: -
![]("http://www.rx7club.com/attachment.php?attachmentid=122488"/)
I can\'t believe I wasn\'t already registered to AusRotary!
Seems to me that this turbo is easily capable of some very powerful figures, but to get the most out of it, you need a fortified engine to take the boost - perhaps that\'s what is putting people off going for Clive\'s, knowing they\'d have to shell out another £3k for the engine work? Or is it feasible to run low boost through such a huge turbo?
Here\'s a pic for the lazy :) This engine has produced 409 @ 14psi: -
Title: big bhp engine question
Post by: 20B_boy on August 14, 2005, 12:15:43 PM
Post by: 20B_boy on August 14, 2005, 12:15:43 PM
No Gary, a straight question - there are A LOT of different GT42s available, I have one (below) simliar to clives and the one ross ran - but the only ones I\'ve seen on \'high horse power\' cars on the wonderful tinternet look more like the TA-style GT42 (bottom) compressor cover. 400 at the hubs at 13psi is indicative for sure! But I have no idea of the differences between them (not used the turbo yet to be in a position to wonder), hence the question...
AusRotary, they sure know how to do it over there dont they, :rollin Good old Pete!
AusRotary, they sure know how to do it over there dont they, :rollin Good old Pete!
Title: big bhp engine question
Post by: kev-yorks on August 14, 2005, 06:04:41 PM
Post by: kev-yorks on August 14, 2005, 06:04:41 PM
Chris running low boost on a GT42\'s no problem you just need a decent wastegate/controller to keep boost down, only running 10psi myself at the moment.
Kevin
Kevin
Title: big bhp engine question
Post by: g11ary on August 14, 2005, 09:32:32 PM
Post by: g11ary on August 14, 2005, 09:32:32 PM
Thats prob ok on 20b but might of thought that the tub wont be operating at no where near opt on a 13b, being a smaller engine it might be off before its on.