MarsaGSX
20+ Year Contributor
- 487
- 29
- Feb 15, 2004
-
Czech republic,,
Europe
Hi All
Thought I could share my build with you guys . Never seen anything that BIG in 2G engine bay
As every year..Iam changing again my setup..
Last year found thread about guy which put holset HE351 VGT and spooled 35psi at 3500rpms or something.. that way I thought umm find bit bigger VGT and this could be pretty impressive.. Maybe two months later found on ebay Holset HE 531VGT and I was sure this is my way threw 2013 seasson!
Specs:
2G 95 AWD /MT/6Bolt
Engine was built by me at 2008.
2.0l 6B Mahle/eagle/ FFWD cryoed,micropolished,ballanced oem STD crank
ARPs/ Cometic
Topline front cover and water pump.
Head
-Kelford tx272/FP beehive springs, EVO alu retainers,other than that stock 6B head.3angle valve job,custom built Intake manifold-5l plenum,120mm runners,Velocity stacks-Q45TB
Forced induction
-Holset HE 531VGT, custom built Top mount ex manifold,single Tial 44, 3.5" turbo -back
2.5" Lower IC pipe,3.5" BEP front mount/short route, 3" upper IC pipe, Tial BOV, GM IAT,custom ISC housing,Omni4Bar Map
Fuel setup
Wally intank/6an to 5l antisurge tank/ 2x 6AN to 2x Bosch 044pumps/8AN to Golan filter/8an bung welded on Stock rail/ Bosch 2200cc high Z inj/Aeromotive FPR/6AN return to antisurge tank. interconnecting between antisurge tank and stock tank.
As for HE531V.. Is basically HX52 comp wheel 65/98
exhaust wheel is 86/77 with huge VGT ex side/ 280mm Outside "diameter" That way first I did was cut out radiator wall..the "rung" so I can move my radiator bit "out" Next removed front tranny mount to fit my collector
Then simple start to fab collector and then whole top mounts.. spent 2/3 weekends of work. 4x we started from zero..cus the design wasn´t idela to get all runners equal.. finally my runners are from 650mm to 670mm which is great
Then I just waited for week for my TIG welder. Later I spent 9hrs of hand grind my turbo flange.. My TIG welder just did not tightenede ex side to flange during welding ..
and since the flange is in baaad position.. my machinist couldn´t put on milling cutter to straightening..
After heat wraping and bolting on ,started with fabing actuator for VGT(MHI intarenal wg/actuator) removing Oil Pan to bore 18mm ID for oil return line, new water lines for turbo, Lower IC pipe, changing Inlet in Water rad and milion other small bits..
Then built exhaust ..3.5" downpipe. Its not best to do this with car only on jack.. so small space when you on lying on your back on the ground and oil pan touching your potbelly
for turbo´s safety put on oil feed line oil press probe
First drive was WTF she won´t spool at all.. 15psi at 6200, 30psi at 7200rpms/ I had still my 60mm Silencer in muffler.. removed him and spool went down to 15psi at 5200 and 30psi at 6200 rpms, then found two Bigger boost leaks and spool was 300rpms faster.. good but still not the area where I wanted.. Expected 15psi at 3500-4000rpms.. Finally after watching Formula1 race in Bahrain.. thought I should simple fix my VGT in Closed position.. I controled my VGT via MHI internal wg actuator..which have 11psi sring.. so once she spooled to 11psi VGT opened and spool up slowed.. Once I fix my VGT in closed position I reached 15psi at 4200rpms(same as my BW s366 0.91ar) and 30psi at 4600rpms!!! (s366 was at 5200rpms) the turbo is blast..
Wthin 2-3weeks going to dyno to find which VGT position is best for efficiency.. Iamnot looking for fastetst spool up possible.. but for best mid torque possible.. wanna see cry 16G guys
Enjoy

Thought I could share my build with you guys . Never seen anything that BIG in 2G engine bay

As every year..Iam changing again my setup..

Last year found thread about guy which put holset HE351 VGT and spooled 35psi at 3500rpms or something.. that way I thought umm find bit bigger VGT and this could be pretty impressive.. Maybe two months later found on ebay Holset HE 531VGT and I was sure this is my way threw 2013 seasson!
Specs:
2G 95 AWD /MT/6Bolt
Engine was built by me at 2008.
2.0l 6B Mahle/eagle/ FFWD cryoed,micropolished,ballanced oem STD crank
ARPs/ Cometic
Topline front cover and water pump.
Head
-Kelford tx272/FP beehive springs, EVO alu retainers,other than that stock 6B head.3angle valve job,custom built Intake manifold-5l plenum,120mm runners,Velocity stacks-Q45TB
Forced induction
-Holset HE 531VGT, custom built Top mount ex manifold,single Tial 44, 3.5" turbo -back
2.5" Lower IC pipe,3.5" BEP front mount/short route, 3" upper IC pipe, Tial BOV, GM IAT,custom ISC housing,Omni4Bar Map
Fuel setup
Wally intank/6an to 5l antisurge tank/ 2x 6AN to 2x Bosch 044pumps/8AN to Golan filter/8an bung welded on Stock rail/ Bosch 2200cc high Z inj/Aeromotive FPR/6AN return to antisurge tank. interconnecting between antisurge tank and stock tank.
As for HE531V.. Is basically HX52 comp wheel 65/98
exhaust wheel is 86/77 with huge VGT ex side/ 280mm Outside "diameter" That way first I did was cut out radiator wall..the "rung" so I can move my radiator bit "out" Next removed front tranny mount to fit my collector

Then simple start to fab collector and then whole top mounts.. spent 2/3 weekends of work. 4x we started from zero..cus the design wasn´t idela to get all runners equal.. finally my runners are from 650mm to 670mm which is great
Then I just waited for week for my TIG welder. Later I spent 9hrs of hand grind my turbo flange.. My TIG welder just did not tightenede ex side to flange during welding ..
and since the flange is in baaad position.. my machinist couldn´t put on milling cutter to straightening..After heat wraping and bolting on ,started with fabing actuator for VGT(MHI intarenal wg/actuator) removing Oil Pan to bore 18mm ID for oil return line, new water lines for turbo, Lower IC pipe, changing Inlet in Water rad and milion other small bits..

Then built exhaust ..3.5" downpipe. Its not best to do this with car only on jack.. so small space when you on lying on your back on the ground and oil pan touching your potbelly

for turbo´s safety put on oil feed line oil press probe
First drive was WTF she won´t spool at all.. 15psi at 6200, 30psi at 7200rpms/ I had still my 60mm Silencer in muffler.. removed him and spool went down to 15psi at 5200 and 30psi at 6200 rpms, then found two Bigger boost leaks and spool was 300rpms faster.. good but still not the area where I wanted.. Expected 15psi at 3500-4000rpms.. Finally after watching Formula1 race in Bahrain.. thought I should simple fix my VGT in Closed position.. I controled my VGT via MHI internal wg actuator..which have 11psi sring.. so once she spooled to 11psi VGT opened and spool up slowed.. Once I fix my VGT in closed position I reached 15psi at 4200rpms(same as my BW s366 0.91ar) and 30psi at 4600rpms!!! (s366 was at 5200rpms) the turbo is blast..
Wthin 2-3weeks going to dyno to find which VGT position is best for efficiency.. Iamnot looking for fastetst spool up possible.. but for best mid torque possible.. wanna see cry 16G guys
Enjoy



-.. where is my 4th.. felt just like neutral... so stoped car and after hour buddy came w trailer.. and found this..
