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BENR
- Thread starter clio_king
- Start date
i can do all porting work mainly, did BenWs manifolds and increased the inlets by an average of 22% and the exhausts by 19-20%. exhausts are almost morror polished (no need for fuel suspension) and inlets a rough satin finish (to keep oundary turbulance layers in operation at all airspeeds).
heads are about 20-25 quid a port.
Ben,
hows it going mate?
what about mine? what would it cost to port the inlet and exhaust manifolds? and what about the head? also would it be an exhange unit or work to my exsisting parts, also would you consider doing the stripping of the parts if needed as im not confident of getting it all off myself
lofty
right ben id like to know what you could to to my 1.4rt engine with £300, id like as much power as possible, and would it be my unit youd do the work to or a replacement one and i just change it over.
how long would it take you.
im wanting this done because im getting n02 fitted soon and i want it to run with as little engine failure as poss.
many thanks jamie.
lofty: if you can find a head, then i can work on that....i can strip it and rebuild it with the old stuff, or new stuff, up to you.
80 quid a manifold.....maybe a bit more for the 16V cause its pretty complicated.....but its alloy yead....so easier to grind....the iron takes ages!!!!
20 quid a port on heads.
Jamie: for 300 quid, i could port the head to within an inch of its life (but keep it reliable.....not much to go wrong anyway. port match the manifolds, enlarge the gaskets. but because it cheaper than what i would normally do (1/2 price) i would take a while as i wouldnt be devoting every min to it, but rather do it in evenings and weekends. You wont have to worry about the bottom ends of the RT, its quite strong, maybe just balancing and stronger rod bolts, i cant do either sorry....but its not expensive, about 50 quid for balancing.
BenWs manifolds i flowed and increased area by 22% on inlet (crosssection) and 20% on exhaust.....but they might perform iffy case there will be a large step from head to manifold and vice versa.
both of ya. i could try source heads, but that would add to the cost, unless you give me your old one (exchange) i can basically just port it, but i can get the seat angles recut to 3 angle valves witht he final cut being 70 deg (best for flow) by an engineering company bout 20 quid a valve...i think, and i can put it together again....it will all take a while though, as im still at uni.
Hiya BenR M8
have you managed to do any flowbench testing yet Sir ?
would be well interested in the results.
Keep up the great work. !
Joe
ben if i get an old head of an R19 16v will that be OK, im a little worried about wear in the valves and springs etc, i would be a real shame to go to all the effort and be left with a duff head,
also, what would you want for me to leave the car with you and you port the inlet and exhaust manifolds and also the head, and if possible slide in some livlier cams that i will supply? (and then would my engine be the same spec internaly as Ben Humes?)
thanks in advance mate
lofty
when are you back in the UK?
hey m8, back to MY original question.
what if u were to get a head do the work on that then i give you my one in exchange, i cant really afford to have my motor off the road for that long.(need it everyday for work)
baring in mind your at uni how long would it take you to do the £300 worth of work. and how much power increase do you think i will gain.
cheers jamie.
yeah, i can source heads, but it takes time, the 16V items being much harder to get.
clio king: you will be looking at about 20-25 xtra BHP if i do the head and manifolds. If you fit new cams and a better fuelling system, you could be looking at 120bhp. But itll take about a month to work on the head and manifolds. i Dont take cars off the roads to work on them, no point really when you can get second hand part and work on them. Exchange would be fine.
lofty: Dunno about the 19 head, woulnt it be safer to work on the clio 16V head, as the 19 has different manifolds etc etc.
wear would not increase at all, itll just flow more air. and i dont think youll need to even re-map it, just increase the base line fuel pressure so more fuel is injected at every map site. and fuel pressure regulator is all you need.
i could fit the cam and set it to roughly the right point to which the LCA is dictated, but then we would need to do power runs on a RR to get the cam spot on, advange r****d, overlap etc etc.
i think interpro would be better at doin this. you wouldnt need to leave your car with me either, ill just come back to you with a finished assembled head.
but its up to you if you want new valves, stronger springs (reduce valve float at high rpm) 3 angle seats etc etc.
ill keep my eyes peeled for the required bits, a while ago hill power are offering cheap heads for somthing like £40,
as far as wear goes i meant that a head that i find might already have been to the moon and back, or is it obvious from looking at it when stripped?
also i have quit my job and am studyiong full time (as well as a few days at DD) so it not the end of the world if my cars off the road for a while,
so m8 im interested in the head work could you find a head do the work then i will send mine with the money and you can send me that one (swap them). sounds good m8. when do you think you could have it done (not in a rush), will this make my n02 system and my engine more reliable.
im very interested.
cheers jamie.
i dont get back to the UK (you live in the UK right?) till october, hen i wont be able to start work till mid october after sourcing a head.
Itll take about a month to do.
Your N20 system wont be affected. If its unreliable now, itll still be, its your N20 system thats acting up. However, if its a high power shot 50+bhp then itll help the gas flow better and give better cylinder filling. SO itll be more efficient.
the most likely part to fail with N20 is the con rods, not pistons and rings. These are not such a orry untill high amounts of N20 are used. If you have a hairline fracture in your rod, the extra torque with N20 will exploit it and it will snap. I have seen a civic with N20 blow al its rods throught the block on its test run!!!
