mk4 golf 1.8t finally finished gt2x hybrid project!

[davegolfturbo]

ok so its been a long time getting the car sorted but now after a lot of time and effort and all the necessary parts, including new fuel pump from the 225 cupra r, piperworx custom exhaust with 3" D/P, 3" MAF, custom charge pipes and FMIC, injectors, ATP manifold etc etc its finally come to an end!

I orignially went to wayne schofield in rochdale to custom map my car, after a few power runs the car got 290bhp but could not be mapped to its full potential as the fuel pump decided to give up and not supply enough pressure. Also the turbo that i had just got back from CR TURBOS was not acting as it should so that needed to go back for them to re do it (long story cut short the exhaust housing was larger than the exhaust wheel, which caused loss of power, also the actuator they designed was not weorking correctly). I bought a new fuel pump and re booked back in to see wayne for the second attempt.

After the second trip to wayne schofield, he managed to get 299.3 bhp and 317 ft/lb torque with limited 1.5 bar boost! from my GT2x hybrid!

After the rebuild the turbo was pushing 1.75 bar boost. this was because the housing had been bored out and bigger internals put in to correct the original problem, so this effectively made it a bigger turbo! when i went the second time to wayne he turned the boost down and it was pushing 317bhp at 1.6 bar boost so god knows what it was pushing with 1.75!!! but wayne been sensible said that i dont want to keep it like that because the turbo would blow up so i agreed and we settled for less power but more reliability!

I have plenty of vids, pics and rolling road print outs of my car on the rollers so when i have time i will upload a few.

its been a long, hard, tiring but rewarding challenge but im now glad its all sorted and im happy with how the car is (until the clutch goes or turbo blows or something along those lines lol!) so time to sit back and enjoy the power!

hope i didnt bore you to much with the write up!

Dave.

 

[gulzar]

ok so its been a long time getting the car sorted but now after a lot of time and effort and all the necessary parts, including new fuel pump from the 225 cupra r, piperworx custom exhaust with 3" D/P, 3" MAF, custom charge pipes and FMIC, injectors, ATP manifold etc etc its finally come to an end!

I orignially went to wayne schofield in rochdale to custom map my car, after a few power runs the car got 290bhp but could not be mapped to its full potential as the fuel pump decided to give up and not supply enough pressure. Also the turbo that i had just got back from CR TURBOS was not acting as it should so that needed to go back for them to re do it (long story cut short the exhaust housing was larger than the exhaust wheel, which caused loss of power, also the actuator they designed was not weorking correctly). I bought a new fuel pump and re booked back in to see wayne for the second attempt.

After the second trip to wayne schofield, he managed to get 299.3 bhp and 317 ft/lb torque with limited 1.5 bar boost! from my GT2x hybrid!

After the rebuild the turbo was pushing 1.75 bar boost. this was because the housing had been bored out and bigger internals put in to correct the original problem, so this effectively made it a bigger turbo! when i went the second time to wayne he turned the boost down and it was pushing 317bhp at 1.6 bar boost so god knows what it was pushing with 1.75!!! but wayne been sensible said that i dont want to keep it like that because the turbo would blow up so i agreed and we settled for less power but more reliability!

I have plenty of vids, pics and rolling road print outs of my car on the rollers so when i have time i will upload a few.

its been a long, hard, tiring but rewarding challenge but im now glad its all sorted and im happy with how the car is (until the clutch goes or turbo blows or something along those lines lol!) so time to sit back and enjoy the power!

hope i didnt bore you to much with the write up!

Dave.

congratulations on getting the car sorted matey. just goes to show how such small things can effect power produced.i bet the car is flying now. would recommend a lsd the likes of quaiffe, should help get that grunt on the tarmac if you dont already have it. enjoy as 317bhp is alot of power in a golf, bet the speedo flies round the dial.


imyself have a 225 leon cupra r stage 2 pretty much at the limit so weighing up options on going big turbo finances allowing. either ihi or gt28.

 

[davegolfturbo]

ye ive heard quite alot about both them turbos.... a lad i talk to quite alot on here called danny_lad you probably have read a few posts has just done the ihi conversion....i may think of this next when i get a bit bored of the lag from the gt2x with it having the standard ko3 flange. the car is now running 299.3 bhp with 317ft/lb torque so it isnt slow...although i dont seem to get full boost till around 4500 rpm...and spool starts around 3k so it is still gbit sluggish, this could be due to the fact the internals of the turbo are now bigger! but when its in boost around 1bar it flys to 1.5bar il uplaod some power graphs from the r/r session when i can... you will see how the power curve goes and you can probably tell from that roughly how it will be as the curve it fair steep and goes even stepper at around 1 bar!

 

[DaNnY_LaD]

Id Have a bash at a new 3'' Tip as that current ATP Crap and Filter isn't helping....

299.5bhp is Good @ 1.5bar just shame its a ****er to spool

 

[davegolfturbo]

ye shure is! i will give it a go i could use your diagrams to help me get the bits ordered and sort it out lol. what bout the gear linkeage atrtachement on the atp tip?