hi,

I want to upgrade 99 Xsara VTS engine with ITB and don't want to upgrade to solid lifters for now.
I checked the forum but didn't come up with any info about dbilas ITB kit ;

http://www.dbilas-shop.com/Products/Throttle-body-kit/Street/Citroen/Throttle-body-kit-for-Citroen-Peugeot-306-309-405-ZX-Xsara-Xantia-1-8-2-0-16V-XU::234.html

About cams there're several options from pipercams and catcams ;

Piper cam GTI6BP285H - 264/264
http://www.pipercams.co.uk/pipercams/www/product.php?pid=GTI6BP285H

Catcams 4903106 - 267/259
http://catcams.co.uk/acatalog/4903106.pdf

Catcams 4903109 - 274/2567
http://catcams.co.uk/acatalog/4903109.pdf

Which one do you recommend to use with ITB and hydraulic lifters ?

Budget for the engine upgrade is reasy so do you recommend to upgrade to forged pistons and rods while doing this upgrade ? If yes which brand do you recommend ?

Any info from experienced users will be highly appreciated

Car has KW V1 coilover, Hyrid ARB, Quaife LSD, 406 V6 Brembos, Richw Flywheel, poweflex bushes... need a faster engine for Istanbulpark track days

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1999 Xsara VTS ITB

hi allanallen, thanks for the reply. dbilas has another kit with cheaper price, for race use they call it ;

http://www.dbilas-shop.com/Products/Throttle-body-kit/for-Racing/Citroen/Mutli-throttle-intake-system-for-racing-for-Citroen-Peugeot-306-309-405-ZX-Xsara-Xantia-1-8-2-0-16V-XU::248.html

I check that Jenvey kits are in the range of 800 pounds so dbilas doesn't seem that expensive.

Is it possible not to skim head and use 4903109 with just aftermarket forged items ?
If yes which brand and which model do you recommend ?
Any weblinks will be highly appreciated.

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1999 Xsara VTS ITB

Hi, sorry for a little thread hijack, I'm gonna be using jenveys and am gonna pocket the pistons, is there a desired cams to run with this, cheers

dbilas already ordered and hopefully arrive to Istanbul in 1-2 weeks, will start project thread once all the parts are ready.

still waiting for recommendation on cams, anyone ?

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1999 Xsara VTS ITB

If I remember rightly, with pocketed standard pistons kent PT 81's are the ones to use or the cat cams equivalent. The reason being is the crown of the piston will only safely take a 1mm deeper pocket. After that you will almost certainly require high comp forged pistons! There is a thread around somewhere written by welshpug on pistons and clearance etc, il have most round when I'm on the computer rather than my phone later on and post a link!

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Team Running Engine again!
Team Negative Camber!
My Budget track engine build thread!
Now appearing at a Trackday near you!!

Hi,
what's going with the project
Have you assembled the engine, is there any measurements - what power it generates

Hi Guys,

I had a good running car with with following setup before but wanted higher power for Istanbul Park track so decided to upgrade to solid lifter setup with 4903276 cams.

Car had standard manifold before so I have custom built a long tube 4-2-1 headers as new cams will run at 8800rpm max instead for 8200rpm hydraulic setup of 4903110.


4903110 Setup

AT Power Biller 45mmx4 ITB
Reverie Carbon Airbox
87mm 12.2 Compresson Wosnner Pistons
PEC Rods
Catcams 4903110 Cams, Supertech Valves, Catcams Springs
Emerald K6 ECU

4903110 to 4903276 Setup Changes

49903276 Cams with Solid Lifters
Helix Clutch & Stachshift Shifter
4-2-1 Long Tube Headers

Following is the new vs old power grap. Old setup on this specific dyno was 221ps and 211NM and new setup is 216ps and 195NM !

There’s big drop in torque and power curve is worse and less than previous setup ??

I purchased all parts from Pug1off till now and their expected power with this cam setup was in the range of 255-260ps ?



I have discussed with my engine builder garage and they said that 12.2mm compression 87mm wossner pistons could be the reason as this much high profile cams would do better with 13-13.5 higher compression pistons.

Down below is the new exhaust manifold, please share your comments on this one also ;







As quick change I plan to go back to stock manifold and check the power curve again together with ECU tuner.

I’m open to any other suggestion from experienced users

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1999 Xsara VTS ITB

thanks for the reply @welshpug.

Here's the profile link for the cams ;http://catcams.co.uk/acatalog/4903276.pdf

307 / 298° , 13.00 / 12.50mm

It's the highest profile available at Catcams based on the website.

ITB is from Pug1off, AT Power 45mm ;



Used with Reverie carbon airbox and with large diameter intake hose connected to bumper with big trompet air inlet ;





I'll check manifold pipe diameters and length and let you know but here's photo installed on the car ;

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1999 Xsara VTS ITB

I have Wossner 12.2 high comp pistons with enough valve clerance. used 95 octane shell pump gas + octane additive which increae octane in the range of 98-100 octanes

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1999 Xsara VTS ITB

engine builder set everything up based on cam profile sheet and checked everything twice. I guess we'll understand if we had a problem like that when we remove the head for checking but I want to check all the options before start removing the parts for control.

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1999 Xsara VTS ITB

only if its the wrong 4-2-1 and a less wrong 4-1

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

Bring on the Trumpets.

loads of pistons out there of higher compression once you stop looking at the cheap stuff.

amusingly the better stuff can be cheaper if you find the right application due to numbers produced.

qed do an 87mm omega piston with quite a tall crown and deep valve cutouts, rougly 8mm clearance on standard valves and about 12.5-1 in a 2.2, itll be much higher in a 2044 engine

it does need the valve cutouts modifying on the exhaust a little, but a decent quality piston at about £400 a set iirc.

youll probably need different rods though, on an 86mm crank youll need rougly a 161mm rod.

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

Bring on the Trumpets.

@welshpug

do you also recommend shorter trumpets for 307° / 298° solid lifter setup ?

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1999 Xsara VTS ITB