My HX40 Evo - 10.90
#31
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^Thanks man! Still need to get back to the track and try for that 8 sec pass. Planning on next weekend! I cant believe its holding up but if it is might as well leave it right haha. The second i put the kelfords in, tuned the car and it was breaking up horrible in 3rd gear high RPM
#32
^Thanks man! Still need to get back to the track and try for that 8 sec pass. Planning on next weekend! I cant believe its holding up but if it is might as well leave it right haha. The second i put the kelfords in, tuned the car and it was breaking up horrible in 3rd gear high RPM
#37
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We machine then to the specification of the holset back housing inducer and exducer.
Where can i get a pair of cams with 11.5 lift? preferable Pipers or kelford
i have a pair of 260 tomei 10.7/10.2 in my car now
they are too mild
Where can i get a pair of cams with 11.5 lift? preferable Pipers or kelford
i have a pair of 260 tomei 10.7/10.2 in my car now
they are too mild
#41
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Even a chamfered divider on a single scroll manifold its not going to be that much laggier.
#43
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btw what sort of logs you got for spool on the .68? interested myself.
Last edited by mean4g63; Apr 16, 2012 at 04:23 AM.
#44
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yes. You are forgetting that you are comparing twinscroll turbine housings vs single scroll ones on physical dimensions. You have to understand the divider wall takes up alot of cross section area, not to mention the casting on a holset turbine housing is damn thick. 14cm for an HX40 is actually quite small when talking about twin scroll. Check out the holset thread on here, and you will see we are using a .84 TS garret housing on an HX40 and it is roughly in the neighborhood of around 16CM twinscroll physical size. the .70AR TS garret housing is around the 13-14CM TS holset size btw.
btw what sort of logs you got for spool on the .68? interested myself.
btw what sort of logs you got for spool on the .68? interested myself.
The original setup was tomei 260 cam with hx40/ar 70 which was machined by a local machine shop. In 1st 4000 rpm 0 psi ,,,,5000rpm 3psi and by 5800 rpm 20 psi.
I did not like that so i purchase a set of 274/278 hks cams here and change the housing to 68 machine by the same person. The car was not re-tuned therefore i cannot carry it up in the rpm BUT I fell boost in 1st by 3500rpm.
It could be the fact the my exhaust cams moves from 10.2 to 11 lift or the size of the back housing.
Motec m48 ecu
#45
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first of all let me be clear
The original setup was tomei 260 cam with hx40/ar 70 which was machined by a local machine shop. In 1st 4000 rpm 0 psi ,,,,5000rpm 3psi and by 5800 rpm 20 psi.
I did not like that so i purchase a set of 274/278 hks cams here and change the housing to 68 machine by the same person. The car was not re-tuned therefore i cannot carry it up in the rpm BUT I fell boost in 1st by 3500rpm.
It could be the fact the my exhaust cams moves from 10.2 to 11 lift or the size of the back housing.
Motec m48 ecu
The original setup was tomei 260 cam with hx40/ar 70 which was machined by a local machine shop. In 1st 4000 rpm 0 psi ,,,,5000rpm 3psi and by 5800 rpm 20 psi.
I did not like that so i purchase a set of 274/278 hks cams here and change the housing to 68 machine by the same person. The car was not re-tuned therefore i cannot carry it up in the rpm BUT I fell boost in 1st by 3500rpm.
It could be the fact the my exhaust cams moves from 10.2 to 11 lift or the size of the back housing.
Motec m48 ecu