Can i run a 2jzge with 20valve quads on a link??

Low_Aa63 · Post by **Low_Aa63** » Thu Apr 06, 2006 7:36 pm

Got a 2jzge on the way. it's a replacment engine sorta thing with no ecu and a severly chopped loom and im bored with no project atm so i mayaswell throw i in a Ke70.

So my question is how easy/hard would it be to run 20valve quad throttle's with a link on the thing?

Some questions i have are...

.Is there any differences between the silver and black top quads?

.What is the cheapest link ecu i could use? unless there is a better allternative?

.Also does anyone make or know someone who makes an auto bell into a manual for a W series box?

Any help greatly appreciated!

Cheers
Ben

Malcolm · Post by **Malcolm** » Thu Apr 06, 2006 8:35 pm

it would work, but why on earth would you run quad throttles on a 6 cylinder? Better off running one big one, or maybe 2 medium siized ones if you're too cheap to buy a biggie

Or were you going to run 1.5 sets of the throttles?

matt dunn · Post by **matt dunn** » Thu Apr 06, 2006 10:43 pm

All_Fours wrote:
Or were you going to run 1.5 sets of the throttles?

We used 1.5 sets of 20V quads on our XR6T focus.

After a week of trying and lots of well know people telling us it would not work,

we gave up and fitted a big single on the front.

Basically because of the physical volume of the engine 4000cc,
it causes too large pressure pulses for the map sensor to get a stable reading.

Matt

Low_Aa63 · Post by **Low_Aa63** » Thu Apr 06, 2006 10:46 pm

For some reason i thought you could seperate them??

What would you suggest then??

I have also had the suggestion of supercharging it as someone i know ha a moderatly priced sc14 what would suitable injection be for that application or would i be better to stick with the standard injection?

deaf_rattle · Post by **deaf_rattle** » Fri Apr 07, 2006 6:29 am

eaton m90 would probably work ok, i wouldnt waste my time with an sc14

Low_Aa63 · Post by **Low_Aa63** » Fri Apr 07, 2006 7:40 pm

Yeah i was relly thinking that if i went supercharger i will just use an old v8 top mount 80x20cm unit i have.

RedMist · Post by **RedMist** » Sat Apr 08, 2006 7:31 am

matt dunn wrote:
All_Fours wrote:
Or were you going to run 1.5 sets of the throttles?

We used 1.5 sets of 20V quads on our XR6T focus.

After a week of trying and lots of well know people telling us it would not work,

we gave up and fitted a big single on the front.

Basically because of the physical volume of the engine 4000cc,
it causes too large pressure pulses for the map sensor to get a stable reading.

Matt

Matt, I gather you were using large overlap cams? I also gather you joined all runners together and used a pot to collect all vacuum? Then took map from the collected point?

You could have used something like the Link TPS and MAP settings which uses TPS only for the first 3 rows then map only for the remaining.

Personally I wouldnt bother going ITB on any engine unless its a spec racer and you need every HP. There are much cheaper solutions that will give you substancially more HP, such as turbo or supercharger.

matt dunn · Post by **matt dunn** » Sun Apr 09, 2006 7:26 pm

RedMist wrote:
Matt, I gather you were using large overlap cams? I also gather you joined all runners together and used a pot to collect all vacuum? Then took map from the collected point?

Yes, collected them into a separate chamber/runner to try and give an overall vacuum signal.

Standard cams.

Not only us, Nizpro in australia and motec themselves told us it wont work,
and they should know.
Nizpro has done over 1 year's development on the XR6T's.

Matt

RedMist · Post by **RedMist** » Sun Apr 09, 2006 10:42 pm

matt dunn wrote:
RedMist wrote:
Matt, I gather you were using large overlap cams? I also gather you joined all runners together and used a pot to collect all vacuum? Then took map from the collected point?

Yes, collected them into a separate chamber/runner to try and give an overall vacuum signal.

Standard cams.

Not only us, Nizpro in australia and motec themselves told us it wont work,
and they should know.
Nizpro has done over 1 year's development on the XR6T's.

Matt

Matt, I've little experience on big bangers (I'm a screamer man myself). I'm attempting to get my head around why ITB affects MAP signal. Surely it shouldnt matter if its ITB or one TB. Unless you are forced to change your map collection point.
Did your solution also mean going AFM?

saft · Post by **saft** » Sun Apr 09, 2006 10:47 pm

isnt he trying to say that with ITB's the "plenum" volume was too small to get a stable pressure reading?

so a big single throttle with a reasonable plenum volume solved the issue?

offtopic, but isnt plenum an odd word

RomanV · Post by **RomanV** » Mon Apr 10, 2006 6:24 am

Perhaps he is meaning that the 20v throttles are too smaller diameter, so the force of the pulses coming through them are much stronger than on a smaller engine, which upsets the signal. :?:

matt dunn · Post by **matt dunn** » Tue Apr 11, 2006 11:57 pm

RedMist wrote: Unless you are forced to change your map collection point.
Did your solution also mean going AFM?

No we are still map sensed,
but the signal now comes from the main plenuim chamber rather than a collection from each of the runners.

Drifter4ag · Post by **Drifter4ag** » Wed Apr 12, 2006 9:37 am

youll be fine ..
it will sound freaking awesome

just use the pulsation dampener from a blacktop 20v and you will have no troubles with standard camshafts

Low_Aa63 · Post by **Low_Aa63** » Fri Apr 14, 2006 3:09 pm

Drifter4ag wrote:youll be fine ..
it will sound freaking awesome

just use the pulsation dampener from a blacktop 20v and you will have no troubles with standard camshafts

Are you talking to me??

fivebob · Post by **fivebob** » Fri Apr 14, 2006 5:42 pm

If you're only planning on running four of them then you'd have to put them before the plenum, or plenums depending on how you do it. In that case you wouldn't have the so many issues with the MAP signal flucuating wildly.

If you want to run them as one throttle per cylinder then you'll need some sort of signal damper. Which may not be that effective in giving you a clean signal. Wouldn't be as much of an issue on a NA engine as it would be on a turbo.

Low_Aa63 · Post by **Low_Aa63** » Fri Apr 14, 2006 6:13 pm

so how the hell do i do it then??

Low_Aa63 · Post by **Low_Aa63** » Fri Apr 21, 2006 9:43 am

anyone?

scotts2hot · Post by **scotts2hot** » Sun Apr 23, 2006 10:21 am

Convert to carb and run individual carbs instead?

Lloyd · Post by **Lloyd** » Sun Apr 23, 2006 10:31 am

Yeah, go for triple sidedrafts

Low_Aa63 · Post by **Low_Aa63** » Mon Apr 24, 2006 9:18 pm

scotts2hot wrote:Convert to carb and run individual carbs instead?

That would me more of a cost and harder to tune!!