Cam work question

[Adams_16v]

If I had sourced my own cams, pulleys and modified head would I be able to take my motor to a local garage to have all the work done and then get it chipped afterwards? or would it need to go to a specialist??

Cheers

 

[Ben H]

Youd probably have to have it towed to an ECU specialist afterwards. Hope my PM helped.

Ben

 

[Adams_16v]

Yeah it did mate thanks. Im just trying to sum up my options at the minute. Dont really know that much about it so Im trying to learn as much as poss at the moment.

input, need input (in johnny 5 style voice)

 

[Ben H]

If youre going to say, source Piper cams and pulleys and have the head done on a send-away and return basis, then have it all fitted - then thats the expensive route. You might as well find somewhere that can do the original head and cams to your spec - I reckon itll be cheaper.

 

[Adams_16v]

Hmmm Best option up to yet (i think) is I was thinking of having my cams reprofiled by kent cams (Bondy can sort this out). Pulleys new and I think I have a spare head which can be sent away to be modified? Then a HP chip to finish it off.

Does this sound about right. I dont really know what im talking about here BTW so if it makes even a little sense ill be impressed :-?

 

[Ben H]

Youll have to get BenR on the case here I think, but Im pretty sure youll need a custom chip depending on what spec you have the head and especially cams done to. What about the manifolds? Going to do them too?

 

[Adams_16v]

aaaargh. Not sure about that. What could be done to that?

 

[Ben H]

I understand that on the F7P/R engines, the inlet manifold is particularly restrictive. You could have it ported - and the exhaust manifold too. Or maybe a K-tec exhaust manifold would suit? See their website: http://www.k-tecracing.comwww.k-tecracing.com

 

[BenR]

HELLO!

well.......

where to start....LOL

to make it simple, i would choose your cam wisely. Most people go too wild then decide it wasnt such a good idea. So, choose the one you want, then go for the one below it. If you really want to go bonkers, some cams with high lift will require solid lifters to replace the hydraulic ones. If you do this, the clearances will need to be adj whilst your getting the cam installed..and its a timely process.

anyway, bring all your bits to a tunners near you. And operation with a decent RR and knowledegable people will be fine.

They will need the car and your bits for a few days if they are busy and they will install teh cams and adj pulleys. Then they time the cams in using the specs that came with it. BUT, if they are any good, they will do power runs to setup teh cam to its optimum, by trial and error, they will try advancing and retarding each cam to find the best power....if they dont do this, then they are a bit lazy.

Then, they will remap whilst on the RR, if they dont have the ability to, talk to Nick Hill about one of his chips to suit. Or go up there and get it done....but itll be easier if the company can do it all at the same time.

RE ported parts.....

a set of worked manifolds, the Ktek or supersprint manifold or indeed a worked head will lead to more power indefinately. PM me for details.

happy camping!

 

[maciek]

ben can you write something more about head work? - im having a head under the bed, pair of cams, pulleys, inlet manifold, and Throttlebody

and Im going to sort these things out in a few weeks.

so... what to do... - anything special, about F7P engine.... with head, inlet manifold, or throttlebody.

anyway - how can you precisely work/port inlet manifold?

my exhaust needs no porting as it si SuperSprint...

 

[maciek]

TRY catcams - i put great hopes in their product you will be informed with all results.

my cams cost 499€/pair. +VAT . they are chilled iron machined from bare rod... weigh appr. the same as OE ones. adj pulleys - 230 €+VAT

try this: http://www.catcams.bewww.catcams.be - mailto:info@catcams.be">info@catcams.be - say You got link from Maciej Straszewicz Poland - maybe you will receive some bonus (although I cant promise anything)

 

[BenR]

well, all work is relative and depends on what you want done or what you want from your engine.

basically, head work is about sorting flow for the neccesary application. a full race head designed to purely flow as much as possible wont work very well with rd cams and std injection....infact, itll be poo.

same with a mild head, if you get it done to a limited spec, then expect what i can deliver, dont keep throwing in bigger cams and larger TBs.....itll just make it flat.

A rd head is about compramise, decent flow, but decent gas velocity to keep torque somewhere near the lower rpm regions LOL. And thats hard with the F7 head......keeping the velocity that is.

nothing special about the F7.......just know what your doin and you should be ok. BTW, where abouts are you?

BTW, are we talking OE manifold or one to fit throttle bodies?

anyway, the working of heads involve the removeal of material, amount depends on purpose and cam profile, and reshaping of teh ports to achieve the best flow. In SOME heads you can remove guide bosses that protrue into teh block if there is enough material IN the casting to hold it tight and take the heat away from the valve.

Its a very specific art, and ill show you some pics of people who DIYed it and tehn sent it to me......itll make you laugh...hehe

 

[coolspot007007]

hehe - you port, Dremel ports

 

[bondy]

iv done basically as you have asked got the cams fitted (kent) fitted a pbv fitted an airfilter and a exhaust then rung nick told him my spec and he mapped my ecu to suit. his chip takes about one day to turn around, excellent service. all seems fine just the tickover is a bit up and down gona get it on the rollers asap. if you need bit mail me o may be able to help phatnova24@hotmail.com

 

[N.D.Hill]

Bondy If you have had the cams timmed in at the Kent figure you will find the idle not to smooth Try retarding the inlet a couple of degrees and advancing the exhaust a couple. This will close down the valve overlap which can play havoc with the closed loop (lambda) system. You will loose out a bit of high rpm power but nothing major.

 

[BenR]

The mark of a well versed man......