Hi, I've had an engine built recently to this spec. I just wondered what people would expect to make power wise.

Head:

Longman head
Piper 285 cams
Solid lifters
Adjustable Verniers

Block:

Re linered block to 86mm
86mm omega pistons
Saenz rods
Gti-6 crank
ACL bearings
TTV lightened and balanced flywheel
Alloy bottom pulley
Full bottom end balance

Other parts:

Jenvey 45's on adjustable trumpets
Jenvey inlet
Omex 600
Gti-6 injectors
3.5 bar FPR
Re angled gti-6 manifold and magnex decat system

I was expecting around the 220bhp mark with strong power up to 7500/8000rpm.

Turns out it peaked power at 6500rpm at only 200bhp.

What do you think has limited this engine. It was a new build done by a proper engine builder but I have not contacted him yet to ask about cam timing.

Do you think the adjustable trumpets would restrict the engine to much as they have an internal bore on 42mm so even smaller than the 45mm jenvey.

Any thought would be great fully appreciated.

Cheers Tom

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205 GTi-6 every day motor
205 GTi-6 weekend/track car - project 230 N/A fingers crossed.

Because you can get 285 for solid lifters as well as 285s for hydrolic !

Nope but a fluted set of 45s to 48s will sort things out - get rid of the adjustable trumpets and talk to jamma pic about trumpet lengths

I have ordered a set of 48's now with a set of 90mm and 120mm trumpets so I was hoping a change to these may free some power up.

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205 GTi-6 every day motor
205 GTi-6 weekend/track car - project 230 N/A fingers crossed.

This seems to have happened to a few people I've spoken to .
200-210 with a great setup is good ....shame this sounds a (extra) great setup ..

Keep us informed about fitting the 48s Please !!!....
220-230 would be just what I'm after

Mei ......48s wouldn't make any difference would it ?
Thought they might with hotter cams ?

Is the mapper top notch also ...Mei will tell you where to go & get your inlet all in one hit ...long drive though

Can't believe your Mapper doesn't like Mr Satchell

If you sell the 45s give me a shout

You have spent a big wedge by the sound of it .....

My 45's will be up for sale for sure if my 48's make me happier. Lol.

My mapper seems pretty good. He has got good power out of many other gti-6's.

He doesn't like the injectors spraying up for some reason, but everyone has there own views.

I'm going to have the cam timing checked to even though this should have been set up when my engine was assembled surely but I forgot to ask when I collected it.

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205 GTi-6 every day motor
205 GTi-6 weekend/track car - project 230 N/A fingers crossed.

It's booked in for next Monday so we will see what happenstance the rollers. Something doesn't seem quite right though.

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205 GTi-6 every day motor
205 GTi-6 weekend/track car - project 230 N/A fingers crossed.

48's will be too big.

you need a better mapper! has he quantified why he doesn't like them? Satchel inlet has been tested and proven to give gains in torque and power over the jenvey tat many times over.

12-1 would be enough for a 300 degree rally cam, you only have a 280 cam at the moment.

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need a part number? get on here - http://public.servicebox.peugeot.com

Bring on the Trumpets.

So what your saying is I need to stay with the 45's and get a satchell inlet??

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205 GTi-6 every day motor
205 GTi-6 weekend/track car - project 230 N/A fingers crossed.

45s are plenty big enough for the power you're after. Your exhaust system is less than 2" diameter in places though which may not be helping?

DAY666, the cams are solid profiles so not that re-saleable unfortunately.

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www.bridgecraftmotorsport.co.uk

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I think I also need to get some normal trumpets once I have determined what length I require.

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205 GTi-6 every day motor
205 GTi-6 weekend/track car - project 230 N/A fingers crossed.

I'd give maniflow a shout and get a proper system built and installed ? After all you have spent out on proper engine parts ? Let's be honest a re angled std manifold is hardly race proven

i'd use edwards motorsport for the manifold and exhaust, makes lots of manifolds for oval dirt racers rally cars and race cars, quite a few jre and sandy brown engines with his systems on.

the last 205 magnex I faffed with was 54mm o.d tubing.

however, something isnt right with ths figures vs spec, many a milder cammed gti6 on hydraulics has cracked the 200 mark on bodies, hell, I think mine might on 264's!

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need a part number? get on here - http://public.servicebox.peugeot.com

Bring on the Trumpets.