Going to start Project on my rx7

[mattfduk]

I get what you are saying but I loved that my largish single made well over 400hp at 0.8 even with its mega quiet exhaust and plumbed in screamer if I have run a smaller turbo at that boost it wouldnt have made anywere near that power and I would have had to up the boost to make the power at the expense of a nice reliable driveable car

[turbotoaster]

the bit im not sure about is the effect of boost.

Theres a difference between on the ragged edge and getting the best out of your setup.

For example, if i started running 20psi on my twins everyday....im pushing them very hard and will make alot of power, but eventually they will fail, but running them at 15psi means i wont have as much power but they will last longer.

Now thats easy looking at that.....but thats a turbo and not an engine, 2 different things.

If an engine is mapped correctly, perfect AFR figures and just the right amount of ignition timing i cant honestly see why the engine should break.

Engines never break for no reason, there is always a reason, normally you push the forces beyond the material specification of the components at that time(something may be in tollerance to start with but age degrades that)

That also emcompasses mapping and failure due to contamination.

If i fitted say a gt42 turbo, ran it on e85(to cut out detonation limit) theres no reason why aslong as i stay within the confines of the material specification i couldnt run 2bar of boost everyday.


The only thing that may lower quicker is compression, but then again that comes down to going beyond the material specification.

[mattfduk]

Yes but what I dont get is your hunger for big power, if you want it great but there is very little point in 400HP in a road car let alone 500HP.
 
Not saying your wrong just saying that everone is aloud to have there our opinion.
 
I dont say to everyone you must run a 3 rotor N/A PP\'d even though having owned stock twins, big single before the 3 rotor is the nicest power delivery and easiest to drive fast even though it makes the most power and is more peaky

[turbotoaster]

im not trying to force big power onto anyone, he could be happy having 350bhp for all i care, the thoughts i brought up were why not get the best from your setup.

If you go for a large turbo, it pushes your boost threshold higher, to offset this you get alot more power.....to me thats a fair compromise, the bit i dont get is not taking advantage of that and only having the downsides.

Maybe im looking at simply from a piston point of view, any other engine you would build it, spec the turbo for the power you want and then run it at that power, not run it less because your scared of it goign wrong........not much point in having a rotary engine then if you cant use its potential.

Im not talking about banging 2bar down its throat but running the avaliable power for pump gas and w/i

you can always run a slightly less boost on the ebc for damp or very twisty stuff then have the power for the straights

[gavinnblake]

yep wooooohooooooo

its had a haft over a dyno as needed more miles on not ran in yet

run at 356.bhp now enging cant go past 6500rpm unto the engine has 4000miles then back on the dyno
 
pip from WGT saild it will be running at 550bhp
 

[Rex_FTW]

Congrats mate glad to see that it\'s going well.

Thats a good figure

Be careful the grammar police might be on patrol!

[turbotoaster]

how many miles has the engine done when you stuck it on the dyno, and is it a streetport, what were the afrs?

[gavinnblake]

its had on 1250miles befor the dyno bud
 
dont no ifis streetport bud

[turbotoaster]

should be interesting when you turn the boost up properly then, ill be impressed if pip gets it up to 550bhp as his dyno figures always seem lower than everyone elses, but that might how rich he runs them.

Do you have water injection?

[gavinnblake]

yes bud i have a water injection

[gavinnblake]

When comming back for WGT
 
this is Gary my brother

 
had a Greddy Type R BOV put on a
polished power steering/aircon plate and a polished Power steering pulley at Wgt

[ENVYD]

you need to sort the wiring out bud as it looks a mess around the intercooler and rad! and you engine is street ported!
 
why did gary drive it back?

[gavinnblake]

i did as well drive the rex bud but did not get a picture lol
 
have you been spying on me LOL just dun the wiring on side TODAY

[ENVYD]

lol ah well, i would also hide the hid box under the bumper som where too!
 
what cam do you hav bud?

[gavinnblake]

its a sony a230