[Mk2] [Turbo] 3sgte Inlet Manifold Advice Needed!!

[lockys96]

i managed 570hp from 850cc side feeds on stock rail, or rail adapted. suprising

[GTS GAV]

Thanks for the info everyone, I was just suspicious as to why ku didn't have a website, and yes sflee I have andys old rev3 inlet mani with. 95mm TB was just wonderd what the restrictions would be on it I'm thinking it will be more than capable of 600hp so suits my needs , and locky that is some impressive figures so sapprised you made it to 570bhp on 850cc injectors were they maxed out?

[ashley]

Yes am having the engine and manifold

How come you changed your mind on the manifold mate? I see it's back up for sale...

[Mr2_BadBoi]

http://www.imoc.co.uk/forums/viewtopic. ... highlight=

[ashley]

Ahhhh- I see...sorry, I didn't put 2 & 2 together

Sure you'll get your cash back soon bud

[Mr2_BadBoi]

its ok mate i hope so i am working on it big time trying to get answers,they told me 2day that i am going to have to make an appointment and sign some sort of fraud form so i can make a claim,and am working away!!! urgh!! so i am going to try and get it faxed and see if that can work,or go to the nearest branch near me

[V8Killer]

OEM Rev 3 manifold is fine. We did 700 horse with it on! You may be able to make a few more bhp with a bigger inlet, but you'd lose so much driveability its not worth it!

You'd need a 1000cc injectors minimum for a GT35R. 850cc won't cut it! You'll need a minimum of a couple of pumps to boot!

[1998mr2]

OEM Rev 3 manifold is fine. We did 700 horse with it on! You may be able to make a few more bhp with a bigger inlet, but you'd lose so much driveability its not worth it!

You'd need a 1000cc injectors minimum for a GT35R. 850cc won't cut it! You'll need a minimum of a couple of pumps to boot!

what about the cilinder 2 and 3 that are running lean..
they say you can solve that withe the aftermarket intake manifold.

[mark239]

or individual cylinder fuel trim.

[RyanRs]

or individual cylinder fuel trim.

Problem with this technique tho is it can only be done 3 ways... 1 would be to flow test the inlet to work out the flow/velocity differences between the runners then plug this into a formula to work out the fuelling ratio difference between all the cylinders. This = Time + money. Second would be to run 4 wideband sensors, 1 for each exhaust runner so you can trim the fuelling accordingly to each cylinder..This = Lots of money.. Or 3. what seems the preferred method, trim based on an Experience related guess!


I would personally say to have a look on the USA forums as there's quite a few companies producing manifolds atm. seems everyone in the usa got a CNC machine and flow tester fitted in there garage nowadays!!

Look at RacerX & Dedicated-matt

[mark239]

or individual cylinder fuel trim.

Problem with this technique tho is it can only be done 3 ways... 1 would be to flow test the inlet to work out the flow/velocity differences between the runners then plug this into a formula to work out the fuelling ratio difference between all the cylinders. This = Time + money. Second would be to run 4 wideband sensors, 1 for each exhaust runner so you can trim the fuelling accordingly to each cylinder..This = Lots of money.. Or 3. what seems the preferred method, trim based on an Experience related guess!


I would personally say to have a look on the USA forums as there's quite a few companies producing manifolds atm. seems everyone in the usa got a CNC machine and flow tester fitted in there garage nowadays!!

Look at RacerX & Dedicated-matt

4 EGT sensors is all you'd need. Thermocouples are still a lot cheaper than a manifold! I just added a couple % extra. Seems ok so far

[RyanRs]

Surely just a EGT sensor cannot be enough tho? There must be too many variables that could effect the reading. For instance, if you have an un-equal length exhaust manifold, then the the gas pressure will be different in each runner, this will effect heat dispersion time making some EGT sensors read hotter than others. Heat soak is another.. ? i may be wrong tho?

[1998mr2]

Often THE ringlands are blown. From cilinder 1 And 3 is that THE Same
cause.. lean conditions?

[ashley]

Surely just a EGT sensor cannot be enough tho? There must be too many variables that could effect the reading. For instance, if you have an un-equal length exhaust manifold, then the the gas pressure will be different in each runner, this will effect heat dispersion time making some EGT sensors read hotter than others. Heat soak is another.. ? i may be wrong tho?

4 EGT probes for mapping is the way forwards
http://i354.photobucket.com/albums/r420 ... prise3.jpg

I'm using 4 thermocouples on the mani for mapping individual cylinder fuel levels, once mapped the thermocouples will come out (don't want to run with them the whole time in case they degrade and I flush a tip through my turbine!).

Also got a thermocouple in the downpipe that will be act as an everyday warning system. The expensive bit was getting the amp's built for the thermocouples, but I had some serious help with these...

[mark239]

Surely just a EGT sensor cannot be enough tho? There must be too many variables that could effect the reading. For instance, if you have an un-equal length exhaust manifold, then the the gas pressure will be different in each runner, this will effect heat dispersion time making some EGT sensors read hotter than others. Heat soak is another.. ? i may be wrong tho?

4 EGT probes for mapping is the way forwards
http://i354.photobucket.com/albums/r420 ... prise3.jpg

I'm using 4 thermocouples on the mani for mapping individual cylinder fuel levels, once mapped the thermocouples will come out (don't want to run with them the whole time in case they degrade and I flush a tip through my turbine!).

Also got a thermocouple in the downpipe that will be act as an everyday warning system. The expensive bit was getting the amp's built for the thermocouples, but I had some serious help with these...

I have a simple circuit somewhere on my laptop that worked with my K-types and my AEM. Was very cheap. I'll dig it out.

It's based around an AD595 thermocouple amplifier

[mark239]

[ashley]

Exactly the chips we used thanks buddy

[V8Killer]

OEM Rev 3 manifold is fine. We did 700 horse with it on! You may be able to make a few more bhp with a bigger inlet, but you'd lose so much driveability its not worth it!

You'd need a 1000cc injectors minimum for a GT35R. 850cc won't cut it! You'll need a minimum of a couple of pumps to boot!

what about the cilinder 2 and 3 that are running lean..
they say you can solve that withe the aftermarket intake manifold.

Am pretty sure this was only a problem on the rev1/2

[1998mr2]

THE gen4 caldina turbo And THE gen3 have still THe problem
THE ringlands.. in cilinder 1 And 3..
Mist of them are using boostcontrolers..( they raise THE boost)
Think that boosting is à very dangerous thing to do.

[Chris]

Good job all these new guys know everything Mushim.... Looks like we both might learn something. Boost is bad Ok!

Hope everyone is well.

Chris.