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91
Chassis and Suspension / Re: 5 link rear sandcar suspension
« Last post by BrianN on October 13, 2019, 12:19:51 PM »
Started with one out of a 2007 2.5i Impreza. (3.9:1) Now a 4X-TY754VFBBA, (US Impreza RS my02-03)(4.111 changed to 4.44 r&p). I also have a TY754VCBCA.(US Legacy Outback my01-02)(3.9:1). Looks like only difference in gears are 1st and 5th, which  don't  matter to me.
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Chassis and Suspension / Re: 5 link rear sandcar suspension
« Last post by dsrace on October 13, 2019, 10:16:00 AM »
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Chassis and Suspension / Re: 5 link rear sandcar suspension
« Last post by BrianN on October 13, 2019, 09:43:48 AM »
DS, I  quoted wrong earlier. Just noticed. Brian's motor was making over 300 hp on Outfronts dyno. And that was over what they considered reliable for them. I  looked into different  stock gear ratio stacks for the 5mt, but they all seemed almost identical. But I  am definitely not an expert on ratios! I will  read your links. And they do seem simple to work on. After all, if I can do it(with YouTube), anyone can.

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Motor and Drivetrain / Re: Soooooo How To Stop The Waterworks
« Last post by fabr on October 13, 2019, 09:33:21 AM »
based on that info your on the threshold of 0 vac.Yes,a very low restriction intake tract. do you know the fuel pressure sensor reads correctly on your data log?Not at this time but is on list of things to check. i have one installed but its not stable at idle. i used the same one enemy uses and it is rock solid for him but not for myself. i have mine mounted in the same place he did as well.  also, does your fuel pump see batt voltage? Yes,but will of course double check.have you ever checked the ecu to verify that it is reading the same voltage as the batt?At this time all I can say is battery voltage is steadyacross all rpm ranges. 13.6-13.9 i had to correct my megasquirt, it red 1.5 volts less that what i saw at the batt. if the ecu thinks you have more or less voltage it changes everything.SFAIK the FAST ecu doesn't reference battery voltage but the battery and logged voltage are right on .
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Motor and Drivetrain / Re: Soooooo How To Stop The Waterworks
« Last post by fabr on October 13, 2019, 09:23:29 AM »
out of curiosity.....did you even data log even a short run on the sand in your v-8 rail?

the reason i ask is ( based on what the cam guy told you) i would think that would be shown on the data log. i do not doubt it at all, i would really like to see it on the data log as imo that would be very impressive!  if that is true ( again i do not doubt it as it makes sense) that would mean you actually built a nascar engine for your rail !!  rofl talk about taking it over the top  :m ;D ;D i don't care who or what anyone thinks, to build that and stuff it in a rail ......i have to tip my hat for that one!  ;D that just makes fast look normal  LMAO LMAO

on the data log i would think that in the midrange at prob 62% and greater tps, one would see something in the range of 95 to 101 kpa?? your ve should be up as well ? if do have the data log save it because i would like to see it just because. i don't know and i bet with the limited run time but say if your inj's were well matched for the build then you were prob say 65% in that mid range? actually interesting to think about when talking about an n/a motor when you think about it!
I agree with what you said and yes,it was a pretty good air pump.With the cam I had in it ,too good at mid range. This new setup should be at least as efficient at moving air.The Brodix heads and the Sb2.2 heads should be approximately the same air flow capability.Approximately 400 CFM @ 28". I will assume for now the new cam will be a bit more mid range friendly. I'll know before long.
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Chassis and Suspension / Re: 5 link rear sandcar suspension
« Last post by dsrace on October 13, 2019, 08:13:50 AM »
for what they charge for just the seq hear stack in the suby trans you could by a complete medi s4 lol https://weddleindustries.com/products/1000165/1004349

i wonder if you could find another 5 speed with different ratio's to swap the gear out of. https://en.wikipedia.org/wiki/List_of_Subaru_transmissions

doesn't look hard to rebuild
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Chassis and Suspension / Re: 5 link rear sandcar suspension
« Last post by dsrace on October 13, 2019, 08:02:40 AM »
i am no expert but if they are handling 600 hp on the strip then i would think they would be good for 300 hp on the sand imo. you are right tq is what breaks them and unfortunately not many list the tq there running with hp.  april is right around the corner lol

https://forums.nasioc.com/forums/showthread.php?t=1475128

that is one i read on the sti 6 speed trans.

scary when there's no pricing lol  http://eng.kaps-transmissions.com/products-si-full-sequential-gearbox.html

here is another good read on the sti 6 speed trans

https://thefactoryfiveforum.com/showthread.php?974-Please-reconsider-STi-6-Speed

here is a price sheet for full seq racing gears  ;D ;D  rofl i about fell out of my chair http://www.rallispec.com/gea_dog_ppg-su6seq.html

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Motor and Drivetrain / Re: Soooooo How To Stop The Waterworks
« Last post by dsrace on October 13, 2019, 07:33:49 AM »
based on that info your on the threshold of 0 vac. do you know the fuel pressure sensor reads correctly on your data log? i have one installed but its not stable at idle. i used the same one enemy uses and it is rock solid for him but not for myself. i have mine mounted in the same place he did as well.  also, does your fuel pump see batt voltage? have you ever checked the ecu to verify that it is reading the same voltage as the batt? i had to correct my megasquirt, it red 1.5 volts less that what i saw at the batt. if the ecu thinks you have more or less voltage it changes everything.
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Motor and Drivetrain / Re: Soooooo How To Stop The Waterworks
« Last post by dsrace on October 13, 2019, 07:24:38 AM »
so that it impressive and on fuel pressure do you have a vac line connected to the fuel reg? if so disconnect that, it's only used for forced induction. no matter what dripping down to 20 ish psi is an issue but again that could be vac doing that. just for example....my rising rate fuel reg is rated for up to 100 psi. wasn't easy finding one that actually put a rating on it! mine raises fuel psi 1 lb per 1 psi boost up to 25 psi then it drops to .75 lbs per 1 psi. i run 130 lb inj's also. i tried an actual walbro 450 pump but it began failing quickly or it couldn't move the fuel it was rated for. either way i went to the a1000 which is over kill for myself. the walbro worked correctly for the first several runs but by the 3rd day at st a it started dropping to the point it wasn't supporting 18 psi boost.  i did read a post that load/kpa mirror each other up to 100 at sea level and at altitude that changes but seems to part ways by 80 at altitude. so no matter what your motor moves some air n/a!
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Chassis and Suspension / Re: 5 link rear sandcar suspension
« Last post by BrianN on October 12, 2019, 08:21:17 PM »
I got what I consider  the most reliable information on subi trans hp from Brian, at Outfront. He was considering  using a 5mt, but his motor was putting out just over 200 hp, and he didn't  think it would  handle it.  I know  that hp and torque are different, and I think I have learned that torque is  what  breaks things. I would welcome  your knowledge on that subject! As far as handling  600 hp, I  would not  believe that,  especially  with paddle tires. I have  read forums for  countless hours on this subject,  but it is usually  just a "pissing match". I have come to the  conclusion that certain  6 speeds are stronger,  but are fewer, and more  expensive.  But if a person has  the hp/torque, then money usually  isn't as much  of as an issue.  I am hoping to get more info on a closer 3rd gear, and invest the money. My buggy  would be so much more fun if I  didn't have to  run it so hard in 2nd, and 3rd was lower. Also, I think just a little more hp could  help that issue. Damn, I  wish April would  hurry up and get  here!!
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