Performance Mods - Page 3

stuzzer · 6-14-05, 17:06

Quote:

Originally Posted by cruisemad

J-Spec Engine Block
If your lucky enough to find an intact J-Spec block in good condition and you have no intention of fitting nos or forced induction snap it up as these have flat top high compression pistons.
UK compression ratio 9.2:1
J-Spec 10:1

Is this true, can't I fit NOS to mine

**cruisemad** · 6-14-05, 19:08

Yes please mate. Know a bit about nitrous but never tried it (well not on my own cars anyway).

Kyle

**Mark 626GT** · 6-18-05, 8:05

Right, I'll compose something when I get a minute.

Until I get my Jspec fitted and do some tests I won't be able comparative results however if someone has told you that a 0.8:1 compression ratio increase over the Espec will mean that instead of being able to run a 150 shot you can only run a 0 shot and I would say they are over reacting.

A 10:1 CR still isn’t that high and on a 2.5 litre will still allow a shot big enough to be 'fun'.

It is true that higher CRs do affect the total amount of gas you can run but it will also make a smaller shot more effective. Yes its very important to get the fuelling correct and not to get too greedy but it can be done effectively.

I suspect there may have been a little bit of the green eyed by ppl who don't have Jspecs trying to scare monger a little by exaggerating some facts a bit

stuzzer · 7-8-05, 2:45

I'd be looking to run a 50 shot, certainly no more than that. I would assume I will see a significant improvement in acceleration with that size jets and still keep my engine in tact.

How hard is it to set the fuelling up, based on the above?

The Don · 11-19-05, 3:44

Hi there,
your posts are very intereasting however i can't follow the thread for the fuel rail mod , how do you do it??
thanks Aaron

**Einstein** · 11-19-05, 4:28

There is a guide in the MX6.com database...
http://www.mx6db.co.uk/index.php?loc=1

John

gary v6 · 5-16-06, 12:05

i was just wondering how do u do the throttle body by-pass? im not sure what the egr valve is......anyone got any pics? im looking for cheap ways to make my car faster..... im thinking of doing the fuel rail mod....should i?

thanks

gaz

**Oddball** · 5-16-06, 12:43

Gary, the TB water by-pass does not give much and many that have done it switch back due to poor idling... messing with the egr valve could mess up your emmisions test for mot. dont know exactly what you mean in terms of the fuel rail mod, the banjo bolt, yes it would help a little, but as for bigger injectors, nope, only if going FI....

Maybe a 65-67mm TB .. and some j-spec bits ...
Oddy.

gary v6 · 5-16-06, 12:59

thank you mate....ye i meant banjo bolt, i read the guide on mx6db...i might give it ago, only if it doesnt mess up anything tho....

gaz

Angeleyed6 · 10-3-06, 23:18

Can anyone give me a better description?

tweek · 12-30-06, 10:17

There is anpther fuel rail mod apart from the Banjo bolt "Twin Feed"

The rails as standard, are looped 2gether on the drivers side

,

Remove the loop fit a "T" piece,then hook up 2 an FSE or equivalent.

On the other end do the sameremove the standard regulator ,put in an adapter plate an "T" both rails 2getherrun line 2 fuel filter.

You will now have 2 fuel rails feeding equal pressure fuel 2 the engine

Euge.....

**Nutisbak2** · 1-2-07, 16:00

Quote:

Originally Posted by tweek

There is anpther fuel rail mod apart from the Banjo bolt "Twin Feed"

The rails as standard, are looped 2gether on the drivers side

,

Remove the loop fit a "T" piece,then hook up 2 an FSE or equivalent.

On the other end do the sameremove the standard regulator ,put in an adapter plate an "T" both rails 2getherrun line 2 fuel filter.

You will now have 2 fuel rails feeding equal pressure fuel 2 the engine

Euge.....

Now thats interesting....

**Parallex** · 1-3-07, 8:41

Euge have you got any pictures of said mod? This sounds quite interesting as I would rather do this than fanny about with the banjo. It would negate the need for a seperate FSE in the usual spot I take it?

Would it work with a seperate FMU eg the Apexi SAFCII? As in on a Supercharger (Blower) setup...and would fitting a Walbro255 make it dangerous to do?

(Only a question or two

)

Ben.

tweek · 1-16-07, 15:17

sorry 4 the late reply,i been working flat out on the 6 to get her ready 4 S/Charging... not long now

.

u can use what ever u want with dual feed set up,i had an FSE with a Cossie FMU and all was fine with the S/C on ,i`ll post some pics when i get my camera back

it`s actually safer when increasing performance and fuel pressures, as both the rails get equal pressure,and less chance of small airlocks.

tweek · 1-16-07, 15:44

Quote:

Originally Posted by stuzzer

I'd be looking to run a 50 shot, certainly no more than that. I would assume I will see a significant improvement in acceleration with that size jets and still keep my engine in tact.

How hard is it to set the fuelling up, based on the above?

If u get a wet kit it`s fairly easy..ie,NOS jets + fuel jets

I ran a 50 shot on a PGT-KLO3 for 6 months with no harm 2 the engine and then S/C`d it

.I would recommend some prep work first though,if u have cats in the manifolds either get earlier one`s with out or better still Hot Shots or Pacesetters,change exhaust and remove cat,an adjustable F/R, FSE or a better aeromotive unit,go i grade colder on the plugs Iridiums are best

this would be my bare minimum.

i ran mine on a Probe with 222BHP and 200lbft b4 NOS,with 60% OF A 50 shot i had 254BHP and 237lbft

6-14-05, 19:08	#32 (permalink)
cruisemad Join Date: Feb 2002 Location: Chester, UK Age: 27 iTrader: (0)	Yes please mate. Know a bit about nitrous but never tried it (well not on my own cars anyway). Kyle
	MEMBER OF THE YEAR 2005 THEY SAY LIGHTNING NEVER STRIKES TWICE.. TRUST ME IT DOES... AKA CLUTCHMEISTER

6-18-05, 8:05	#33 (permalink)
Mark 626GT Join Date: Jun 2002 Location: Hartlepool, Teesside, England, UK Age: 30 iTrader: (0)	Right, I'll compose something when I get a minute. Until I get my Jspec fitted and do some tests I won't be able comparative results however if someone has told you that a 0.8:1 compression ratio increase over the Espec will mean that instead of being able to run a 150 shot you can only run a 0 shot and I would say they are over reacting. A 10:1 CR still isn’t that high and on a 2.5 litre will still allow a shot big enough to be 'fun'. It is true that higher CRs do affect the total amount of gas you can run but it will also make a smaller shot more effective. Yes its very important to get the fuelling correct and not to get too greedy but it can be done effectively. I suspect there may have been a little bit of the green eyed by ppl who don't have Jspecs trying to scare monger a little by exaggerating some facts a bit
	I am thinking of adding Mark 626GT to my ignore list

5-16-06, 12:05	#37 (permalink)
gary v6 Join Date: Apr 2006 Location: gainsborough, nottinghamshire, UK Age: 23 iTrader: (0)	i was just wondering how do u do the throttle body by-pass? im not sure what the egr valve is......anyone got any pics? im looking for cheap ways to make my car faster..... im thinking of doing the fuel rail mod....should i? thanks gaz
	18" konig holes, 5" zorst and alot more to come!

5-16-06, 12:43	#38 (permalink)
Oddball Join Date: Jun 2003 Location: kent, UK Age: 40 iTrader: (1)	Gary, the TB water by-pass does not give much and many that have done it switch back due to poor idling... messing with the egr valve could mess up your emmisions test for mot. dont know exactly what you mean in terms of the fuel rail mod, the banjo bolt, yes it would help a little, but as for bigger injectors, nope, only if going FI.... Maybe a 65-67mm TB .. and some j-spec bits ... Oddy.
	92 2nd gen HYBRID - ZE cams, ZE inlet manifold, ZE ECU, JE50 VAF, port matched outlaw inlet spacers Mag 8.5 leads, 65mm TB, CAI Tokico shocks springs, SS Auto headers, SS DE-cat, SS Scorpion cat back, 17in Wolfrace Osaka alloys My Album

5-16-06, 12:59	#39 (permalink)
gary v6 Join Date: Apr 2006 Location: gainsborough, nottinghamshire, UK Age: 23 iTrader: (0)	thank you mate....ye i meant banjo bolt, i read the guide on mx6db...i might give it ago, only if it doesnt mess up anything tho.... gaz
	18" konig holes, 5" zorst and alot more to come!

7-8-05, 2:45	#34 (permalink)
stuzzer Banned Join Date: Aug 2004 Location: melton mowbray, UK Age: 35 iTrader: (0)	I'd be looking to run a 50 shot, certainly no more than that. I would assume I will see a significant improvement in acceleration with that size jets and still keep my engine in tact. How hard is it to set the fuelling up, based on the above?

11-19-05, 3:44	#35 (permalink)
The Don New Member Join Date: Sep 2005 Location: nottingham, UK Age: 32 iTrader: (0)	Hi there, your posts are very intereasting however i can't follow the thread for the fuel rail mod , how do you do it?? thanks Aaron

10-3-06, 23:18	#40 (permalink)
Angeleyed6 New Member Join Date: Oct 2006 Location: Canton, MI, USA Age: 20 iTrader: (0)	fuel rail mod Can anyone give me a better description?

12-30-06, 10:17	#41 (permalink)
tweek New Member Join Date: Dec 2006 Location: Luton, UK iTrader: (0)	There is anpther fuel rail mod apart from the Banjo bolt "Twin Feed" The rails as standard, are looped 2gether on the drivers side , Remove the loop fit a "T" piece,then hook up 2 an FSE or equivalent. On the other end do the sameremove the standard regulator ,put in an adapter plate an "T" both rails 2getherrun line 2 fuel filter. You will now have 2 fuel rails feeding equal pressure fuel 2 the engine Euge.....

1-3-07, 8:41	#43 (permalink)
Parallex Join Date: May 2005 Location: Kettering, UK Age: 25 iTrader: (0)	Euge have you got any pictures of said mod? This sounds quite interesting as I would rather do this than fanny about with the banjo. It would negate the need for a seperate FSE in the usual spot I take it? Would it work with a seperate FMU eg the Apexi SAFCII? As in on a Supercharger (Blower) setup...and would fitting a Walbro255 make it dangerous to do? (Only a question or two ) Ben.
	Ladies and Gents - SOON TO ARRIVE - The Fastest 6 in the midlands... Full KLZE rebuild, the proverbial works! Its all in progress - updates soon...

1-16-07, 15:17	#44 (permalink)
tweek New Member Join Date: Dec 2006 Location: Luton, UK iTrader: (0)	sorry 4 the late reply,i been working flat out on the 6 to get her ready 4 S/Charging... not long now. u can use what ever u want with dual feed set up,i had an FSE with a Cossie FMU and all was fine with the S/C on ,i`ll post some pics when i get my camera backit`s actually safer when increasing performance and fuel pressures, as both the rails get equal pressure,and less chance of small airlocks.