183 replies to this topic

[skogshuggarn]

Minimum of 75mm pipework to fit onto the 68mm TB neck

Then my ITG is waist of money

[PaulCP]

Areawise the move from 58 to 68 mm is equivalent to the move from 147 HP to 202 HP airflow-wise.

So the 68 mm TB would fit PaulCP:s or ShinyAndys cars really well IMHO. Could free up several HP almost FOC.....................

Hmmmmmmmmm

Tempting - could mate with the Dbilas quite well

AMD stage 4 Thorney?????????

Edited by PaulCP, 22 January 2005 - 03:31 PM.

[clipping_point]

The loom needs extending @ 150mm as the plug has moved 180 degrees, so swapping them with the extensions (whilst soldering them) is a better way.

How should one make the extension? To have something that plugs right in and extends 150 mm sounds great, but where do we find the necessary female/male (shemale? ) connectors?

[vocky]

Personally I would cut one pair of wires at a time, then solder a new section of wire onto one end of each wire, fit 2 pieces of heat shrink sleeving to each wire, then solder the other ends (swapping colours where required, like E+F) and finally slide the heat shrink sleeving over the soldered joins before heating the sleeving to form a good seal. (or you could just use insulation tape on the soldered join) Then repeat for the remaining wires, this saves getting the wires connected wrong . But if the plugs were available , an adaptor extension could easily be made , and this could swap the wires without any other alterations . But the dBlias inlet manifold must require an extension anyway, as the TB is at the side of the engine, so can someone with a dBlias let us know how the cable loom was extended please

Edited by vocky, 23 January 2005 - 12:20 PM.

[minime]

if i remember rightly the dbilas kit has extentions for the throttle body!

[clipping_point]

Yes, and it could be returned to original, if necessary. All these extensive mods contain a portion of uncertainty

[minime]

does anyone know if the larger throttle body will fit directly onto the existing mountings?

[vocky]

If the fixing holes were enlarged it would bolt on, but the standard inlet manifold air intake hole is only 60mm and the gasket would not seal properly. So a 5mm plate mounted onto the standard inlet and the 68mm TB bolted on top of that would be better, also it would then clear the EGR pipe. I bought my 68mm TB to fit onto either a Venom or dBlias inlet manifold, as the standard inlet will not benefit as much with the increased flow possible with the enlarged TB, so I never expected it to fit a standard inlet - but I was surprised that it could almost bolt straight on.

Edited by vocky, 23 January 2005 - 01:09 PM.

[vocky]

The 68mm TB would fit the saab manifold,

[clipping_point]

Interesting!! Does it have equal length runners and a plenum? Turbo inlet design is not as crucial, u can just pump up the pressure a step...

[vocky]

That is the downside of the Saab inlet, it does not flow so well, but maybe with the 68mm TB it might improve things

[griffo]

I see Courtenay are now offering cheapish repro cams for the n/a. Does anyone know anything about them? Griffo (a fish)

[minime]

just got the info on my dbilas cams..... looks as if i different inlet/outlet... code refs..680/690 duration 256/248....pk time 115/105....vavle lift 12mm not sure on the other figures as i cant read what has been written

[vocky]

Just fitted the 68mm TB (with a VW golf inlet manifold) and the engine runs I need to finish off the install as various pipes blanked off or not connected Once it's finished I will post the results of a road test (hopefully not 6 months again ) PS I blanked off the EGR valve (fitted a piece of metal between the gasket and valve) a few weeks ago. No performance gain but stopped the engine from revving high on first start up.

Edited by vocky, 12 July 2005 - 07:35 PM.

[clipping_point]

Just fitted the 68mm TB (with a VW golf inlet manifold) and the engine runs

I need to finish off the install as various pipes blanked off or not connected

Once it's finished I will post the results of a road test (hopefully not 6 months again )

PS
I blanked off the EGR valve (fitted a piece of metal between the gasket and valve) a few weeks ago. No performance gain but stopped the engine from revving high on first start up.

Great news!

Interesting blanking off the EGR thingy, was it hard?

[vocky]

Interesting blanking off the EGR thingy, was it hard?

No very easy , just used the gasket and traced around it onto a sheet of stainless steel to produce a blanking plate, drilled the 2 holes and created a small dent in the middle (the valve protudes a little).
Then simply fitted the gasket, then the blanking plate and finally the EGR valve.

The reason I tried this first was to see if it caused any eml, plus my new inlet manifold did not have a fitting for a EGR pipe

So after a few days I completely removed the EGR pipe (inlet - head) and fitted a suitable blanking disc in the standard inlet manifold (strangely the engine stopped high revving at cold start up without the pipe )

So without the EGR pipe a 68mm TB would almost bolt straight on to the standard inlet, all that would be required is an adaptor plate and the plug wiring, plus a little porting of the inlet section below the TB

[cicastol]

Great news!

Interesting blanking off the EGR thingy, was it hard?

I could post some photos,very easy you just need a thin metal sheet (0,2 0,3mm range) to make a blank gasket,need some grind the EGR valve to make it plane but very easy job....

[clipping_point]

Great news! 

Interesting blanking off the EGR thingy, was it hard?

I could post some photos,very easy you just need a thin metal sheet (0,2 0,3mm range) to make a blank gasket,need some grind the EGR valve to make it plane but very easy job....

Please do!

[cicastol]

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[cicastol]

2Nd

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