my twincharged project

[quattro-nick]

did some boost tests today,i have noticed a boost drop when compressor disconnect and turbo takes over like on 4500rpm with compressor and turbo i have 2.0 bar boost,when compressor disconnect(4500rpm) there is a little drop from 0.25bar when turbo takes over so on +- 4550 rpm 1.75 bar.
so i did a testdrive only with turbo and i saw that the gt35 (0.82 A/R )make 2.0 bar at +- 5000 rpm and 2.2bar on 5500 rpm
are these normal numbers? I expected that the gt35 woud have full boost(2.0 bar) around 4500 rpm (head and cams are origional AAN)
could it also be some wrong ignition numbers in my vems ignition table?
some numbers: 1.8 bar:4100 rpm-15.00°
5500 rpm-16.75°
7600 rpm-18.25°

2.2 bar:4100 rpm-12.75°
5500 rpm-15.00°
7600 rpm-16.75°
a other solution is maybe change turbo exhaust house from 0.82 to 0.63 A/R ?
what do you think guy's?

[Ficksy Heart]

full boost with gt35 is possible at 4500rpm i think so too. but your pipes are not like a standard turbo system. i have 2.0bar at 4000rpm with precision 6262 ar.82. but a engine is not like the other, little differences at the engine can make big differences at the result.

i would not change the exhausthousing, the difference in between ar.63 and .82 is minimal.

[quattro-nick]

thanks for the info!

[mac2226]

Just read the project from beginning nick and love how you also twin charge it keep up the good work

[quattro-nick]

thanks mate
waiting for some more parts ..........

[ProX]

Very very interesting project i some time thinking about it on one car.
Good work

[quattro-nick]

thanks
still busy on my bypass valve adaption,also 7a cams have arrived so this will be the next thing

[quattro-nick]

little update
bypass valve is almost done and i have changed the AAN cams for 7A cams
the inlet cam was not a straight fit,the dizzy gear was different.i have a older AAN engine with a diizzy (tunacan) for camshaft sensor
with some heating i switched the gear on the cam
after start the engine was not running good,This was because some hydraulic lifters were too wide open so I had bad compression
after 20 minutes running it was al fine
just a liittle bit more work and than back on the road for some vems mapping
7june back on the dyno
left intake cam 7A-right AAN intake cam

[quattrostyle]

Glad you found the cams

[quattro-nick]

me too,bought them on german ebay for 200 euro

[Majorcina]

Looking good mate looking good

Poslato sa G7-L01 uz pomoć Tapatoka

[quattro-nick]

thanks buddy
when are you going to map your car?
did you make the same setup as thomas?

[Majorcina]

No Thomas set up is far better then mine But stil learning
Still no clue when the maping is going to happen since i have to travel 800km in one way to dyno

[quattro-nick]

how is yours than? charger in to turbo? also with a y-pipe before turbo with a one way valve? you may also explain it on your thread

[Majorcina]

I didnt explain my self very good,the principle is the same like Thomas car,but i didnt get yet the one way valve,and i want to build oil catch can before i do anything else on power.
Also have some wild thots this days,probably going for Holset hx40 hybrid,but also was thinking about Pro Charger.But still cant find place where Pro Charger would fit since radiator is so close to the engine?I belive hoslet and procharger would give very good results,or one of them would blow