bfreshmk2 Posted September 19, 2016 Report Share Posted September 19, 2016 I have a mk2 escort with a 1600 x flow and was talking to a friend who mentioned running 1300 Pistons in it would raise the compression and up the power is this true if so what would need to be done Link to comment Share on other sites More sharing options...
Vista Posted September 19, 2016 Report Share Posted September 19, 2016 Yes it's true that using 1300 x-flow pistons in a 1600 crossflow block will increase the compression ratio. There's a bit more info in this thread. http://www.oldskoolford.co.uk/ipb/index.php?/topic/71771-1300-pistons/? Link to comment Share on other sites More sharing options...
bfreshmk2 Posted September 20, 2016 Author Report Share Posted September 20, 2016 Cheers mate I will have a look Link to comment Share on other sites More sharing options...
bfreshmk2 Posted September 20, 2016 Author Report Share Posted September 20, 2016 Will there be a noticeable change and is it worth it? Sorry about the questions just trying to build on a budget lol Link to comment Share on other sites More sharing options...
Vista Posted September 20, 2016 Report Share Posted September 20, 2016 Will there be a noticeable change and is it worth it? Sorry about the questions just trying to build on a budget lol I'm afraid I can't say as I've never owned a crossflow powered car. From what I've read on here though, people rarely make this change in isolation, it is usually done as part of other upgrades and as a package does produce good results. Link to comment Share on other sites More sharing options...
bfreshmk2 Posted September 20, 2016 Author Report Share Posted September 20, 2016 Cheers any help is appreciated Link to comment Share on other sites More sharing options...
colr6 Posted September 20, 2016 Report Share Posted September 20, 2016 If you google 1300 Pistons into 1600 crossflow turbosport forum there is a very good article on this although very exhaustive it is very informative, I read and learnt some things. Link to comment Share on other sites More sharing options...
bfreshmk2 Posted September 20, 2016 Author Report Share Posted September 20, 2016 Will have a look cheers Link to comment Share on other sites More sharing options...
RWL81P Posted September 20, 2016 Report Share Posted September 20, 2016 1300 pistons, a decent kent cam while your in the block and a 4 branch manifold will make a good difference. just dont be expecting porsche power. will liven your engine up no end though, was the common mods in the 90's for us. and get +90 pitons. they will need pocketing though. Link to comment Share on other sites More sharing options...
bfreshmk2 Posted September 20, 2016 Author Report Share Posted September 20, 2016 Cheers I was thinking about a 234 cam I have twin webers 1300 pistons and getting it set up properly. I don't want mega power just a decent revvy engine that's better than standard Link to comment Share on other sites More sharing options...
RWL81P Posted September 20, 2016 Report Share Posted September 20, 2016 Cheers I was thinking about a 234 cam I have twin webers 1300 pistons and getting it set up properly. I don't want mega power just a decent revvy engine that's better than standard it will be the bollox especially with twin 40's they rev to the moon, use arp rod bolts and get it ballanced properly. we found that rods like to exit the block. Link to comment Share on other sites More sharing options...
colr6 Posted September 20, 2016 Report Share Posted September 20, 2016 If the budget could stretch to a good modded head will work wonders with what you already have, also get the flywheel lightened. Usually engines are done as a package not one thing on its own will make a massive difference but a well chosen package can give a drivable useful engine. Don't go overboard on cam as the advantages of more power make them a pig to drive. To me I would sacrifice a bit of power to make the car more drivable with a larger power band instead of my engine produces a fancy bhp figure at 10 million revs! That's no use to anyone unless your the Stig !! 2 Link to comment Share on other sites More sharing options...
RWL81P Posted September 20, 2016 Report Share Posted September 20, 2016 If the budget could stretch to a good modded head will work wonders with what you already have, also get the flywheel lightened. Usually engines are done as a package not one thing on its own will make a massive difference but a well chosen package can give a drivable useful engine. Don't go overboard on cam as the advantages of more power make them a pig to drive. To me I would sacrifice a bit of power to make the car more drivable with a larger power band instead of my engine produces a fancy bhp figure at 10 million revs! That's no use to anyone unless your the Stig !! we used to run a standard 1600 head cos we couldnt afford propper ones, and cams were everywhere for 20 quid! Link to comment Share on other sites More sharing options...
colr6 Posted September 20, 2016 Report Share Posted September 20, 2016 we used to run a standard 1600 head cos we couldnt afford propper ones, and cams were everywhere for 20 quid! Ahhh the good old days! Link to comment Share on other sites More sharing options...
RWL81P Posted September 20, 2016 Report Share Posted September 20, 2016 Ahhh the good old days! and you had to have a janspeed or you wasnt cool Link to comment Share on other sites More sharing options...
bfreshmk2 Posted September 20, 2016 Author Report Share Posted September 20, 2016 What cam would you recommend? I would get the head ported and polished while it's all being done as well Link to comment Share on other sites More sharing options...
RWL81P Posted September 20, 2016 Report Share Posted September 20, 2016 cams personal choice. down to how you drive and what you want the car for. weve had fast road and rally cams. but for bast results with the latter you really want propper conrods and 45's. so it starts getting expensive, and turns it into an animal to drive. speak to jeff harris see what they could help you out with. theyre a frienly bunch! 1 Link to comment Share on other sites More sharing options...
colr6 Posted September 20, 2016 Report Share Posted September 20, 2016 Totally agree with RWL everyone's idea of a good cam is different. Cam profiles have changed since I used them, do some research on the cam sites and read people's views on them as I have said before the cam people's claims are not always the same as the end users results. Link to comment Share on other sites More sharing options...
bfreshmk2 Posted September 20, 2016 Author Report Share Posted September 20, 2016 I want it for mostly road use so a mild cam with more range is probably better. It's all money like you said and starts getting expensive but it needs to be done Link to comment Share on other sites More sharing options...
puddy Posted September 20, 2016 Report Share Posted September 20, 2016 My budget x flow engine consists of .... 711m block bored to 1660 with used 1300 pistons and new rings . 1600gt head with ports cleaned up , single valve springs . BCF3 cam , as big as you can go on standard valve springs /non pocketed pistons . Crank reground , new bearings . Cleaned and checked oil pump . Electronic ignition . Twin 40's . Mass style exhaust manifold with a 2 1/4 inch system . Flywheel has been lightened but I would use a stock one next time , also would have decked the block . puddy PS . All mods and built by myself . 1 Link to comment Share on other sites More sharing options...
bfreshmk2 Posted September 20, 2016 Author Report Share Posted September 20, 2016 Sounds good mate what bhp and torque you running? Link to comment Share on other sites More sharing options...
norm1 Posted September 20, 2016 Report Share Posted September 20, 2016 hi for head work take it to thatch on the a41 Aylesbury to Bicester rd nr westcot , Link to comment Share on other sites More sharing options...
bfreshmk2 Posted September 20, 2016 Author Report Share Posted September 20, 2016 Is it on wescott park ? Link to comment Share on other sites More sharing options...
puddy Posted September 20, 2016 Report Share Posted September 20, 2016 Sounds good mate what bhp and torque you running? Dunno , never dyno'd it . Gets the back out lovely tho in my mk1 tina puddy Link to comment Share on other sites More sharing options...
nosher 64 Posted September 21, 2016 Report Share Posted September 21, 2016 Here's mine. Connaught Competition Engines built 1689cc xflow Standard 1600 block, decked and rebored 1300 +90 lightweight pistons New piston rings Balanced crankshaft Ex formula ford big valve head Full port and polish on the head Valve seats uprated for unleaded New valves, valve guides, stem seals New uprated single valve springs Steel rockers and rocker shaft Duplex timing chain and sprockets Lightened flywheel Stage 1 AP clutch Piper 285 camshaft Weber twin 40 DCOES Long ram inlet manifold 105speed Mass style exhaust manifold Custom single box exhaust by Pipecraft Engine set up by BD Engineering, and dyno'd before the 105speed manifold was fitted at 135 bhp at 6200rpm, although the power graph was still climbing when he let off. We are planning to get them to re dyno it, ideally to 6800 or thereabouts and we are expecting probably 145-150bhp Would just like to mention a special thanks to young Sam at Connaughts, built the engine himself and we couldn't be happier with it. Link to comment Share on other sites More sharing options...
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