Getting very close to fitting my itb's -any comments on this please?...

[puretone]

Originally Posted by RST

He "guffawed" at me when I called back (dunno the translation)......

A hearty, boisterous burst of laughter.
intr.v. guf·fawed, guf·faw·ing, guf·faws
To laugh heartily and boisterously.

"BWAHAHA" similar?

[Roman]

This might help, if you need to make a custom base for your trumpets?

[Celica RA45]

dave thats the throttle side to go to inlet manifold you need the other end for the ram tubes

[Roman]

Haha I was thinking that tonight down at the pub....

"Wait, isnt the trumpet side two bolts instead of three?"

Haha my bad.

[RST]

I dug out a very quick sketch I did off some rough measurements. I'm just using the filter backing plate to convert the different PCD's for the trumpets. I think the 4AGE tb's have 2 bolts at something like 73mm and the trumpets have 2 bolts at 65mm....summit like that anyway so you just turn the trumpets round until the fixings from them clear the tb mounts. That just means that the trumpet length is increased by the thickness of the plate so they'll be equivalent of 43mm long or near enough. My CAD file is hidden in an archive somewhere so I haven't checked those distances.

[MANDALAY]

Originally Posted by RST

I’m doing a bit of thinking again at the moment as I’m close to getting round to fitting my itb’s –hoping to get the car booked in within the next month so I have it back for the sunny weather.

I was wondering whether I can bounce a few things off you guys; see what you think…..

…..BTW the guys doing the work for me have recently itb’d a Celica with a rev 3 3SGE and got something in the region of 200hp at the wheels during mapping with a Link G1 (though there was a fair bit of internal work performed and the CR was raised –allot of which I would have thought is stock in the red top from the start). The itb’s used weren’t great (had to be machined) and had very short trumpets which put the power band up too far for my liking.

Before we go anywhere –I will be fitting the ITB’s onto a backing plate to accept a sausage shaped filter. Discuss air boxes vs. filters/socks elsewhere please. The itb’s are 48mm ID 4AGE items –using a custom red top adapter manifold which I bought second hand and I plan on using 48mmID x 40mm long trumpets available from Jenvey in the UK. The bolt pitch is wrong on the Jenvey trumpets so the filter backing plate will be used as an adapter also.

MAP line’s we’re intending running vacuum lines off each throttle to a common point with a small chamber and running the MAP sensor line from that.

Brake boost lines we’re intending running lines off each throttle again to a common point with a small chamber and tapping the brake booster line from there.

…both these arrangements based on the experience with the recent project. I want to keep my MAP line separate whatever we do –in line with all the recommendations I’ve seen before and the one’s in my ECU instruction manual.

PCV lines I am intending running them to an oil catch can which currently has no attachment for a breather filter –this will be machined and a fitting screwed in to take a small breather filter.

The Phoenix Power Exhaust header seems to be out of production so I’ve asked them to quote for an equal length custom stainless 4-1 manifold –they’ve suggested 1.5” ID header pipes down to 2.5" to mate with my existing 2.5” Blue Flame twin exhaust system. I don’t particularly wish to change to a single exit so can’t see a reason to change from my current exhaust at the moment (I prefer the twin exit look by far)?

A high flow sports cat will probably be fitted as I may be loosing my friendly garage for yearly MOT’s / emissions testing so keeping the de-cat section may not be a great idea. Having said that –it supposedly passed emissions on the CAT test last November no problem though I didn’t enquire into it.

I have a twin 11” Spal fan kit which is going on the engine lid shortly –will be switched through the ECU. I recently drilled and bonded in short studs in the engine bay lid to bolt the fan mount to rather than relying on the existing (tired) screw holes. I’m not too sure what temp to base switching the fans on yet -I have to do a little more thinking on that one.

I will probably install 2 mouldings that I have which slightly extend the side engine bay vents to scoop a bit more air into the engine bay when the car’s moving. I will probably remove the stock drivers’ side fan and install 2 ducts from coiled tubing secured at the vents and routed back to the filter to feed air directly to the filter.

The engine will be going for a service /advisory at the start of the works and any parts such as oil / water pumps inspected etc. The G3 XLEM I currently have fitted should be more than capable of handling the set-up with the itb’s. The C-One flywheel and Helix Stage 1 Organic clutch I have fitted have only done a few thousand miles since fitting back in October 2008.

Power-wise I’m not spectating as I'm certainly not chasing figures any more though a couple more hp would be nice –it’s currently running 183hp at the wheels. I am using the same garage and mapper / dyno centre as I used last time so I should have an accurate comparison of before and after (hopefully I should be able to get the same dyno op as well). BTW the car was mapped before on 97RON BP Ultimate and is never run on anything else –this is the most reliable source of decent duel for me.

….sorry for the long post guys, I was just wondering if you had any thoughts or pointers. I see there’s another itb’d red top appeared recently. That reminds me –I must drop Wayno a message to see how he’s getting on with his. Haven’t seen him on for a while.

Thanks for looking / contributing.

2 11 fans is some serious sucking Why not run it of the OEM standard fan computer. Im sure the manual says when the probe hits 62oC.

[RST]

2 11 fans is some serious sucking Why not run it of the OEM standard fan computer. Im sure the manual says when the probe hits 62oC.

...yea they're gonna suck big time but on Tubby's they have been shown to work quite well.

I don't know just quite how I will do them yet. The original side fan works off engine bay temp if I recall. But I've been watching my IAT since I got my ECU -OK I haven't had big temps but when you stop at the lights the temp suddenly rises and takes a long time to drop when driving again. So the fans will be there primarily for when the car isn't shifting enough to draw much air in through the side vents I think. They'll come-on at idle and when driving say less than 20mph -the logic allows to do that in the Link through an external relay. Dunno yet though. Allot of folk fit a switch for them on the dash but I don't want to have to think about it.

The guys at work nicknamed my car the "hair dryer" since I bought it so I figured it might as well sound like one on idle now

[Celica RA45]

so rst you are using silver top throttles which are 43mm on the butterfly .you do know that trd do a 30mm ram tube ,but will only fit black top throttles which are 45mm and taper out to 49.5 mm at the end
on brake booster just connect the booster line to 1 inlet port ,that will work fine
1 port is enough for braking to create enough vacuum as it dissapears after high revs any way

[RST]

All work on hold indefinately now due to the damn credit crunch crisis (my job basically).