90 degree induction bend done - findings

[taylormj4]

Hi all,
I started installing the ACT smooth-bore induction kit recently. Only had time to fit the 90 degree bend so far but all installed nicely. Lovely kit and good advice in the instructions on cutting and fitting.
Had to take around 2 inches of tube off to get a good fit.
When buying the kit, I knew I was getting smooth bore (helping airflow) but hadn't realised that the ACT pipe bore is actually considerable larger than the standard pipe. I know there is still the restriction from the air flow meter but this should also help. See pics.
My only negative comments/slight concerns are:
1. The pipe now fouls the oil dip stick slightly causing it to bend over.
2. There is no concertina-type flex in the pipe compared to the original pipe, so how will it cope with the engine moving around under acceleration? Will this cause the AFM mounting bolt to fracture the wing in time? I am hoping/expecting ACT have considered this and it is not a problem.





Looks lots better than the standard fit tumble-dryer hose in my opinion. Well done ACT !

This pic shows the reason for buying the kit in the first place. The induction hose has collapsed and perforated where it bends from the front bulkhead to the filter. Was quite shocked when I found this. Wondering if I might see some noticeable increases in performance as a result when I fit the rest of the kit.



Here's another view of the collapsed hose from through the wheel arch access panel. Looks pretty restrictive - check yours. I reckon this could collapse even more under the vacuum created in the tube when you bang open the throttle. That can't be good for performance.



Cheers, Matt

Edited by taylormj4 on Monday 28th March 22:38

Edited by taylormj4 on Tuesday 29th March 10:35

[SILICONE KID]

I would insulate the whole induction kit,it gets very hot above those manifolds..Your going to have fun fitting this kit

[roysum]

Have you tried rotating your dipstick 180 deg ?

[slideways]

roysum said:

Have you tried rotating your dipstick 180 deg ?

sound painful

[taylormj4]

roysum said:

Have you tried rotating your dipstick 180 deg ?

Yes, worse, it would put it right under the pipe - you can't get it in at all that way.

[taylormj4]

SILICONE KID said:

I would insulate the whole induction kit,it gets very hot above those manifolds..Your going to have fun fitting this kit

You're not kidding about the heat. I ran the engine just for a minute or two after fitting the kit (from complete cold start) just to check for air leaks and the lower part of the hose (the original fit) was already too hot to keep hold of. If that's what it's like after two minutes of idling from stone cold, with the bonnet up, you can imagine what's it like under normal conditions !

ACT provide a small section of insulation but this will only cover around a third of the lower hose. What else is available to do the whole job. Presume it would be good to insulate or have a shield over the AFM too. I guess bacofoil isn't going to look to good

Have you had problems fitting the kit then SiliconeKid ?

[Ozstyle]

It looks as if your dipstick oil tube has been pushed backwards to me. I think you need to undo the oil tube to rocker cover bracket (single screw), straighten the bracket and adjust your dipstick oil tube position. I've just fitted the ACT induction kit and my dipstick handle sits well forward of the 90 deg elbow.

[taylormj4]

spend said:

Have you rotated the dipstick guide + a simple p clip screwed into the rocker cover. They seem to find a multitude of positions when the covers are re attached after service

Considered that but thought if I changed the angle of the dipstick, the lower end of it might foul something in the sump. Not sure what the clearances are like. Have stripped the sump and oil pickup strainer assembly off a Range Rover V8 before and there seemed reasonable clearance.

[taylormj4]

Ozstyle said:

It looks as if your dipstick oil tube has been pushed backwards to me. I think you need to undo the oil tube to rocker cover bracket (single screw), straighten the bracket and adjust your dipstick oil tube position. I've just fitted the ACT induction kit and my dipstick handle sits well forward of the 90 deg elbow.

Thanks Ozstyle, if yours is like that and the crank hasn't chopped off the dipstick then it'll be fine on mine. That solves issue number 1, what about no.2 - the flexibility issue. Anyone? How much does the engine (plenum) move around under acceleration in relation to the wings ?

Edited by taylormj4 on Tuesday 29th March 10:37

Edited by taylormj4 on Tuesday 29th March 10:39

[SILICONE KID]

taylormj4 said:

You're not kidding about the heat. I ran the engine just for a minute or two after fitting the kit (from complete cold start) just to check for air leaks and the lower part of the hose (the original fit) was already too hot to keep hold of. If that's what it's like after two minutes of idling from stone cold, with the bonnet up, you can imagine what's it like under normal conditions !

ACT provide a small section of insulation but this will only cover around a third of the lower hose. What else is available to do the whole job. Presume it would be good to insulate or have a shield over the AFM too. I guess bacofoil isn't going to look to good

Have you had problems fitting the kit then SiliconeKid ?

Yes it is a bit of a job,i purchased heat mattting and steel ties

[mgjc]

SILICONE KID said:

Yes it is a bit of a job,i purchased heat mattting and steel ties

Where did you purchase the heat matting ans ties from?

Cheers
Mark

[SILICONE KID]

Ties and matting Flea Bay

[taylormj4]

Nice job SiliconeKid !
Your dizzy looks different to mine and in a different place. Is that standard fit on the later Chimaeras or a mod ? Mine's a 1997 450.
Matt

[SILICONE KID]

No dizzy or AFM, it has coil packs,trigger wheel ,two wide band lambda`s and a megasquirt ECU..With 339bhp .. The power steering reservoir re located where the dizzy fits ..

Edited by SILICONE KID on Tuesday 29th March 17:14

[dbv8]

I look forward to the posts you are planning for Friday Daz

[spend]

dbv8 said:

I look forward to the posts you are planning for Saturday Daz

EFA

[taylormj4]

SILICONE KID said:

No dizzy or AFM, it has coil packs,trigger wheel ,two wide band lambda`s and a megasquirt ECU..With 339bhp .. The power steering reservoir re located where the dizzy fits ..

Edited by SILICONE KID on Tuesday 29th March 17:14

Wow ! And a white oil filler cap. That must be worth an extra hp or two ? Good stuff. How much of that extra power can you put down in 1st and 2nd, or is it only in 3rd up ?
Cheers.

[Alexdaredevilz]

taylormj4 said:

Wow ! And a white oil filler cap. That must be worth an extra hp or two ? Good stuff. How much of that extra power can you put down in 1st and 2nd, or is it only in 3rd up ?
Cheers.

He doesn't know, he only drives it to the rolling road centre

[spend]

Alexdaredevilz said:

taylormj4 said:

Wow ! And a white oil filler cap. That must be worth an extra hp or two ? Good stuff. How much of that extra power can you put down in 1st and 2nd, or is it only in 3rd up ?
Cheers.

He doesn't know, he only drives it to the rolling road centre

..and he still gets a bump steer

[neal1980]

SILICONE KID said:

No dizzy or AFM, it has coil packs,trigger wheel ,two wide band lambda`s and a megasquirt ECU..With 339bhp .. The power steering reservoir re located where the dizzy fits ..

Edited by SILICONE KID on Tuesday 29th March 17:14

Hope your coming to the pod then, can show us all what this 339 can do