20b rx8
01-08-2015, 04:32 AM
#226
So these arrived yesterday from rx8performance
Work of art!!! Awesome build quality. I also have the alloy undertray tho I'm not sure how I'll fit it yet, given the subframe mod and steer rack relocation but hey it'll be fun trying.
Did I mention the rotor cans are a work of art!!
Single can at front sits nicely in the space behind shroud. It'll be the 2stroke oil can for omp. Only will need 10inches of hose.
The two at back are windscreen washer and oil catch can.
Work of art!!! Awesome build quality. I also have the alloy undertray tho I'm not sure how I'll fit it yet, given the subframe mod and steer rack relocation but hey it'll be fun trying.
Did I mention the rotor cans are a work of art!!
Single can at front sits nicely in the space behind shroud. It'll be the 2stroke oil can for omp. Only will need 10inches of hose.
The two at back are windscreen washer and oil catch can.
01-08-2015, 09:41 AM
#227
So, gonna move the turbo again. I'm just not comfortable with all that weight north of the steering rack, plus I could do with so me realestate up front for cooling etc.
If I can vent the hood at the turbo and get about an inch clearance between T and UIM plus T and chassis I think she'll work ok back there. I'll get the T heat coated also.
Should be able to simplify the x manifold too, close to equal runner lengths and very little bends.
If I can vent the hood at the turbo and get about an inch clearance between T and UIM plus T and chassis I think she'll work ok back there. I'll get the T heat coated also.
Should be able to simplify the x manifold too, close to equal runner lengths and very little bends.
Last edited by SiNfidelity; 01-10-2015 at 06:40 PM.
01-11-2015, 03:47 AM
#228
Can anyone suggest a dimensionally smaller turbo that is a great match for the 20b?
Ideally a V-band style.
I am keen on drift racing, so early mid revs boost is ideal.
This borg warner is huge
Ideally a V-band style.
I am keen on drift racing, so early mid revs boost is ideal.
This borg warner is huge
01-12-2015, 04:47 PM
#229
On a side note, here's an interesting comparison
Our almost stock twin turbo auto fd rx7 -2000 ( just high flow exhaust no mid cat and 77,000km) used 16Lt of 98 for 137kms
Our stock auto rx8 2004 (with about 10,000km since rebuild) used only 1lt less for the same journey. !!!!
Just goes to show how inefficient a non turbo low torque rotary is compared to a turbo hi torque rotary is. Of course the variable here is the Rene exhaust ports compared to fd.
For the sake of saving on 1 lt of fuel per 100kms I'd rather own a turbo.
Our almost stock twin turbo auto fd rx7 -2000 ( just high flow exhaust no mid cat and 77,000km) used 16Lt of 98 for 137kms
Our stock auto rx8 2004 (with about 10,000km since rebuild) used only 1lt less for the same journey. !!!!
Just goes to show how inefficient a non turbo low torque rotary is compared to a turbo hi torque rotary is. Of course the variable here is the Rene exhaust ports compared to fd.
For the sake of saving on 1 lt of fuel per 100kms I'd rather own a turbo.
01-14-2015, 04:36 PM
#230
Figured out I need to make this dump pipe first if I'm ever gonna get this turbo as far back as I want.
I have the dump esmeril made me, but seeing as I'm not using their manifold the original shape/bends are useless, but it's a great base to start from. Has the vband flange etc.
So because the turbo will be back do far, I needed a 90degree bend as close to T as possible.
And presto)(@$ here's my 1st ever fabbed bend
Not the prettiest weld I know. But o grinder will sort that.
I have the dump esmeril made me, but seeing as I'm not using their manifold the original shape/bends are useless, but it's a great base to start from. Has the vband flange etc.
So because the turbo will be back do far, I needed a 90degree bend as close to T as possible.
And presto)(@$ here's my 1st ever fabbed bend
Not the prettiest weld I know. But o grinder will sort that.
01-14-2015, 07:31 PM
#231
Maybe a GTX4202r might get you there but I mean you might have to sacrifice some power for response and packaging. Or maybe a 76mm T4 S400sx.
700 is just outside what an EFR9180 or GTX4294r might be able to do... if you want to make big power you need a big turbo.
01-14-2015, 11:09 PM
#234
Is your goal 700 horsepower at the wheels? Maybe a GTX4202r might get you there but I mean you might have to sacrifice some power for response and packaging. Or maybe a 76mm T4 S400sx. 700 is just outside what an EFR9180 or GTX4294r might be able to do... if you want to make big power you need a big turbo.
Would prefer a turbo that doesn't stick out the hood. Guys on rx7 site suggested efr9180 or s366
Anyone here wanna swap my never used s475 for something smaller?
01-20-2015, 04:12 PM
#236
Just posting this up as it may help someone out who's using the fd motor and or water pump etc
I took the air pump off after removing the cat on the gf's FD. I was worried about the lack of belt contact on the water pump after doing this so I used one of the cosmo 20b main pulleys which as u can see by the pic is slightly larger.
I did have to drill out two holes to realign with the fd engine plus put an extra two alignment holes in.
Also used slightly larger alt pulley.
And obvious the correct size belt was purchased. The belt size is crucial and there's not much room for error as the alt adjust is minimal.
The top pulley in my hand is fd, cosmo underneath it.
The cosmo 13b may have the same size as 20b, I'm not sure.
I took the air pump off after removing the cat on the gf's FD. I was worried about the lack of belt contact on the water pump after doing this so I used one of the cosmo 20b main pulleys which as u can see by the pic is slightly larger.
I did have to drill out two holes to realign with the fd engine plus put an extra two alignment holes in.
Also used slightly larger alt pulley.
And obvious the correct size belt was purchased. The belt size is crucial and there's not much room for error as the alt adjust is minimal.
The top pulley in my hand is fd, cosmo underneath it.
The cosmo 13b may have the same size as 20b, I'm not sure.
01-21-2015, 04:29 PM
#239
I feel like there isn't much progress at the mo. I'm just redoing things and improving stuff,, which I spose is progress but I don't feel any closer to completion!!
Changing that turbo is gonna make life easier, should be able to finally build a manifold.
Ordered a new t4 to 4" transitional flange.
Bought a another omp cos mine was looking shady.
Had to tweak the oil filler neck some more for clearance. I'll take pics later.
Will weld the intake pipe to barrel cooler and the elbow at the TB I'll weld to cooler too. Will only have 2silicone pipes. One to TB and one to Turbo.
Changing that turbo is gonna make life easier, should be able to finally build a manifold.
Ordered a new t4 to 4" transitional flange.
Bought a another omp cos mine was looking shady.
Had to tweak the oil filler neck some more for clearance. I'll take pics later.
Will weld the intake pipe to barrel cooler and the elbow at the TB I'll weld to cooler too. Will only have 2silicone pipes. One to TB and one to Turbo.
01-26-2015, 03:53 AM
#242
Head down **** up, that's the way we like to ffff-proceed.
Welded up n modified blue battery retaining bracket for use as my intercooler support bracket.
Welded the bov flange on.
Had to re weld one of the joins on the big bend as it snapped when I tested it with the lean test!!
Bolted up the strut brace
Trimmed the silicon joiner to suit the pipe and TB.
trimmed half of the abs bracket for clearance but still need more clearance!! Grrr
Welded up n modified blue battery retaining bracket for use as my intercooler support bracket.
Welded the bov flange on.
Had to re weld one of the joins on the big bend as it snapped when I tested it with the lean test!!
Bolted up the strut brace
Trimmed the silicon joiner to suit the pipe and TB.
trimmed half of the abs bracket for clearance but still need more clearance!! Grrr
01-28-2015, 04:56 AM
#243
Had a crack at the AC lines. Ummmm, not entirely successful but interesting nonetheless
The larger of the pipes was weld-able but I struggled with the tiny pipes.
I used heat gun and vice with some bangin to put new bends in the pipes but it was all a bit ugly.
I will go find some kind of universal pipe kit and make them for scratch.
Mounted the heat exchanger for the intercooler, which also happens to be the giant hell expensive setrab oil cooler I was gonna use as such but I've decided to use twin coolers on either side like the original set up, except bigger. Approx 12" x 11" each.
The larger of the pipes was weld-able but I struggled with the tiny pipes.
I used heat gun and vice with some bangin to put new bends in the pipes but it was all a bit ugly.
I will go find some kind of universal pipe kit and make them for scratch.
Mounted the heat exchanger for the intercooler, which also happens to be the giant hell expensive setrab oil cooler I was gonna use as such but I've decided to use twin coolers on either side like the original set up, except bigger. Approx 12" x 11" each.
01-29-2015, 03:44 AM
#245
02-01-2015, 05:26 AM
#246
I feel déjà vu.
Port matched the turbo to the transitional flange. Didn't need much luckily but the turbo bolt holes needed to be reamed out to suit the flange. Must be some t4 variances in size.
Port matched the turbo to the transitional flange. Didn't need much luckily but the turbo bolt holes needed to be reamed out to suit the flange. Must be some t4 variances in size.
02-04-2015, 04:32 AM
#247
Sorry to bore ya all, but I just seem to be going round in circles at the mo. Pulled the rad, crash bar and heat exchanger out with an intention of starting the turbo manifold, BUT, sidetracked by **** not finished!! Time to clean it up
Did mount the new turbo flange tho so hopefully tomoz I will get something achieved.
U guys with left hand drives are lucky when it comes to turbos! Not so lucky with spark plug changes tho I guess?? Haha
Did mount the new turbo flange tho so hopefully tomoz I will get something achieved.
U guys with left hand drives are lucky when it comes to turbos! Not so lucky with spark plug changes tho I guess?? Haha
Last edited by SiNfidelity; 02-04-2015 at 04:51 AM.
02-05-2015, 06:41 AM
#248
Oil coolers arrived, so of course I needed to trial fit.
Modified the factory brackets, by removing about 10mm effective raising the height of coolers. I gotta say it was my best welding effort yet!!
Btw, Australia s1 rx8s didn't have two coolers so being that I only had two left brackets, (one from my spare rx8) I also swapped the two arms of one bracket to create a right hand bracket. Yes there is a difference and tho only marginally, it would've killed me to leave it as two LHS brackets. It's a disorder.
Anyways there's a before n after shot of the bracket illustrating the xtra height gained.
Also tacked the flange to a 45degree 4"elbow to help with the merge of manifold.
Modified the factory brackets, by removing about 10mm effective raising the height of coolers. I gotta say it was my best welding effort yet!!
Btw, Australia s1 rx8s didn't have two coolers so being that I only had two left brackets, (one from my spare rx8) I also swapped the two arms of one bracket to create a right hand bracket. Yes there is a difference and tho only marginally, it would've killed me to leave it as two LHS brackets. It's a disorder.
Anyways there's a before n after shot of the bracket illustrating the xtra height gained.
Also tacked the flange to a 45degree 4"elbow to help with the merge of manifold.
02-05-2015, 09:10 AM
#249
Good progress pics Man! :-) you are close! By the way just a tip to consider... You should look I to maybe opening up other air passages for your stack of heat exchangers. Maybe something to flow air over the crash bar directly to your radiator and condenser :-) keep this up bro
02-05-2015, 03:40 PM
#250
Good progress pics Man! :-) you are close! By the way just a tip to consider... You should look I to maybe opening up other air passages for your stack of heat exchangers. Maybe something to flow air over the crash bar directly to your radiator and condenser :-) keep this up bro