Approx £500 mate but im glad there's no visable crank damage that would have been too much
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Approx £500 mate but im glad there's no visable crank damage that would have been too much
Dissapointed to see it fail like that, tbh though the engine sounded flat as a pancake at not that high rpm, whats the rev limit set too and where was peak power ?
The engine seemed to drive fine the limit is set at 8500 as set by steve And it made 232bhp on fri night
good to hear it's looking positive on the damage (if there is such a thing!) mate, keep us posted.
Thats one hell of a loss from the dyno figures isn't it !Quote:
Originally Posted by Gareth_C
What exhaust system is it on ? not knocking the build as we both know it has the right bits but when I was expecting it to sing it just sounded very flat, considering your times I'd say there is a underlying problem somewhere.
To be fair you did well to get it there, I'm quite sure with some tweaking the lost horses will reappear and the car will run good
When paul @ Rs tuning started it was only reading 197bhp, I dont think its too bad as the torque figure is 200ft lb (that reading is 100% accurate) we will see what its like when i rebuild it.Quote:
Originally Posted by Jonlem
197 ! well something obviously went tits up since the dyno. As you say see how it goes once rebuilt.
Gutted to hear this mate, what times did you do on the 1st and 2nd attempt?
The fastest I got was a 13.5 but I was told I was wheel spinning quite alot.
Bugger! Are you running a slippy diff?
is that 3" exhaust not setting you back a bit?
If its 3" its too big. Something has clearly gone wrong since the dyno as even if the figures were slightly out ( which I doubt ) its lost nearly 60hp hasn't it ?Quote:
Originally Posted by david dixon
Not according to SBD but I'll ask the questionQuote:
Originally Posted by Jonlem
i saw it spin up 1st, 2nd and quite a bit of 3rd on that run. such a shame after whats gone into this bud... keep at it. get what needs fixed done first. sort out the oil lines and worry about the rest later.Quote:
Originally Posted by Gareth_C
I really don't want to sound rude, but did you run all the new engine components in before even taking it on the rollers? Kid gloves, variable loads & speeds for the first 1000 miles then fresh oil & filter is in order, along with limited revs is best.
What was the oil pressure doing since the build? Where was the heat telling on the rods?
It shouldn't be spinning in 2nd let alone 3rd, even more so as your on a tall 1st and 2nd ?
How did you set the arms up in the end ?
The engine was built and ran in on an engine bed in Essex somewhere by steveboyslim mate, the oil pressure was at 75psi and I haven't had the full rods out but the heat Mark were on the caps.Quote:
Originally Posted by BRoadGhost
It felt like it was spinning in those gears others have said the same, the arms I haven't really played with Specky the wheels want moving back a few cmQuote:
Originally Posted by Jonlem
It was run on a bench dyno at Joe Stevens prior to being fitted in the car, this is why I think something has gone tits up as it made something like 260hp there then 197 @ RS Tuning, knowing who mapped it initially I would be very surprised if the map was a issue and even if it was to lose over 60hp from a atmo engine is outrageousQuote:
Originally Posted by BRoadGhost
As you say it was all very last minute for you but you certainly want to set those up for the next time out. On 2 of the runs I saw I'd say it wasn't wheel spinning after 1st as the gearing really does seems very tall, it wants a different cwp in there if your just using the one straight out of a F20Quote:
Originally Posted by Gareth_C
The sheet I got was 244bhp but I can't get it fixed how a 3" exhaust fitted to the type c as spec by SBD would lose so much power but the fact it did 200ft lb of torque didn't get me to concerned as I didn't want Tje build to end up pub figuresQuote:
Originally Posted by Jonlem
Yes I'm using the STD f20 final drive, again it was suggested that was the more practical way of doing itQuote:
Originally Posted by Jonlem
You'll be able to tell by looking at the rod bearings if they've spun, which could mean the bolts weren't stretched correctly when being assembled or not run in enough before given the abuse; assuming the oil pressure never failed. Good luck with sorting it. If it's you rebuilding, once it's all back together take the time to turn it over to get the pressure up before firing it.
The pipe split on the main oil line so the top layer of the bearing is non existent really mateQuote:
Originally Posted by BRoadGhost
I'm quite sure Giles had either a 2.5 or 2.75" Simpson system on his nigh on 270hp xe, 3" is turbo territory or maybe the much bigger 300+ engines.
Final drive is a tricky one but the best of the stock ones would be a F20 4x4 FD iirc but really you want to look towards something much closer which will keep the engine in the power all the time, I can't remember if Ollys ( Trackdaynova ) was on a 4:1 or 5:1 but that pulled a 12 sec pass and the gearing was sweet for trackwork.
New Quaife FD is a lot of money though so its something you want to make sure is fit for purpose.
There is a youtube video of the engine run on an engine dyno before it went in the car see http://www.pngclub.com/forum/showthr...75-bhp)/page62 post #619Quote:
Originally Posted by BRoadGhost
Steve
Bearings can spin even if the rod bolts are correctly stretched.Quote:
Originally Posted by BRoadGhost
Steve
Just an update, I spoke to Craig from SBD this morning and the 3" exhaust they say is recommended for the xe using the type C manifold. He also said all the work that's needed is done by the manifold so the exhaust won't cause the issue. He also they tested type c on a engine dyno with a 3" exhaust fitted and then the manifold by itself and there was no power differenceQuote:
Originally Posted by Jonlem
Can't argue with that then, I am quite sure others don't use 3" systems though but if they work so be it.
All that said there must be a big problem somewhere on it to of lost that much power
He also said the power Los could be down to the fact of it being fitted into the car due to air restrictions etc but also maybe rs roller read lower Im not sure but with a torque figure Rhys 7ft lb up from the engine dyno session then tere must be something right in it. Issues will be fixed then I'll take it from there
Can't argue with that then, I am quite sure others don't use 3" systems though but if they work so be it.
All that said there must be a big problem somewhere on it to of lost that much power
How was the dyno calibrated for the run, any ideas? as if the torque is correct, but BHP massively down it points towards the RPM calibration being out, unless it's seeing a large enough air restriction to strangle the flow for top end, but that's fairly unlikely.Quote:
Originally Posted by Gareth_C
Tbh I'm not sure how the rollers were done the torque was done by the injector cycle. There shouldn't be any restriction the bulkhead is bit is cut out and the bonnet was completly off.Quote:
Originally Posted by MK999
The only possible restriction is the air filter but its massive
Is there a pic of your bay with filter etc in here somewhere? I've not seen one but I tend to be a bit erratic on here the last year, I'll trawl through if there is one lol Main tell tale on your dyno printout is if the redline is a bit early, it's probably been calibrated a bit out.
Power = Torque x RPM, so if it thinks you're revving a bit slower than you are, the torque will be spot on, but it will calc your power a bit down on what it actually is.
Pics of filter sorry if there a bit crap ive just braved the garage to take them.Quote:
Originally Posted by MK999
http://i761.photobucket.com/albums/x...0/DSC04278.jpg
http://i761.photobucket.com/albums/x...0/DSC04282.jpg
http://i761.photobucket.com/albums/x...0/DSC04279.jpg
Also pics of the power graph sorry again if its a crap pic ill try and scan it if people dont get the idea
http://i761.photobucket.com/albums/x...0/DSC04285.jpg
Also I must say a HUGE thanks to Dave at PEC (performance engine components) i phoned him and told him what id done over the weekend and he gave me a really good discount on another set of rods, its nice to see some companys will still help you when your luck is ****.
So these came in the post
http://i761.photobucket.com/albums/x...0/DSC04286.jpg
I'm ringing him tomorrow with a made up story, discount ftw lol Nice work cracking on with the repairs
lol mate im trying to see the guy i bought the hose off for more, better hose for free lolQuote:
Originally Posted by Iain
Shouldn't have too much issue with your filter setup, used by plenty of people. It may well be pulling a lot of hot air straight off the exhaust though, that will definitely drop the power a surprising amount.
On the power graph, any idea where your usual redline is? it doesn't seem quite as much as 20-30% out though tbh.
The redline was originally set at 8500rpm and I don't think it was changedQuote:
Originally Posted by MK999
Looks like it is calibrated 500RPM short then, you can add about 6% for free lol Call it 246 :pQuote:
Originally Posted by Gareth_C