cavaddict Took the car for the MOT today and its failed miserably on the emissions. The HC was at 1301 with the max being 1200 and last year it was it 338. So the new engine has higher compression and a ported Saab head with stage 1 Comp cams. Does anyone think just bunging the old standard cams back in will get me through the test? Can't have it mapped for 6 weeks and the MOT is out.
IDI_AMIN Anytime my car has failed on emissions , a new air oil filter engine flush and new oil seems to have cured that problem and thats 2 years running it's been on the failure list . Do not know about your particular engine with comp cams though
dewismotorsport Does your car have a cat still? If so chuck some catclean in and it should get it through the test http://bit.ly/1l37akv
cavaddict The engine is basically new internally, has only covered 90 miles. Cat is fairly new too, but I'll try some cat clean. Am gonna bung the old cams in too as I can't see the head being at fault.....although you never know!!
Sjdickso Is it a sports cat and what size exhaust are you running? Had mates scrape through with 100 cell cats before if they get them toasty just before test.
cavaddict No its a standard cat on a 4-2-1 exhaust using 2.5" pipe. Has passed fine on the last engine. Old cams are in so just gotta time the chain, then i'll have the emmisions checked again.
cavaddict Got the standard cams back in and it sounds a lot more normal. Gonna pop it down to have the emissions checked at 15:45......fingers crossed!
cavaddict Yep, its the cams. HC has gone from 1301 down to 257. Spoke to Courtenay who said the cams would defo need to be ' dialled in '. Trying to find the info on the web is proving to be a nightmare though!
dewismotorsport Interesting. I think I have the same cams so would be interested to know the correct disk in info
evocarlos dewismotorsport said: Interesting. I think I have the same cams so would be interested to know the correct disk in info aint the ones you got from steve the piper cams ? cavaddict said: Yep, its the cams. HC has gone from 1301 down to 257. Spoke to Courtenay who said the cams would defo need to be ' dialled in '. Trying to find the info on the web is proving to be a nightmare though! what part are they ? theres loads of diffrent profiles http://www.summitracing.com/int/parts/cca-113350/overview/
cavaddict They're listed as 113200, do the 2600 - 7000rpm range. 113201 is the inlet; lift is 0.423" & duration is 252° 113202 is the exhaust; lift is 0.419" & duration is 256°
evocarlos cavaddict said: They're listed as 113200, do the 2600 - 7000rpm range. 113201 is the inlet; lift is 0.423" & duration is 252° 113202 is the exhaust; lift is 0.419" & duration is 256° http://www.compcams.com/Company/CC/cam-specs/Details.aspx?csid=1080&sb=2
evocarlos not sure you have to think the usa spec l61 still uses the same part number sprocket so would fit the same but the best person to ask is @[deleted] 🙂
cavaddict Courtenay said to remove the lugs on the sprockets so i could use them. Just need to work out how to actually time them up.
evocarlos cavaddict said: Courtenay said to remove the lugs on the sprockets so i could use them. Just need to work out how to actually time them up. the b207r sprokets don't have the lugs 🙂 ive used 2 x 2.2inlet cams in my saab head so just stuck on the 2.2 sprokets my knowledge of degreeing the cams is limited but vocky knows 🙂
cavaddict Ok, will try and catch up with him. Have found the instructions and cam boxes, but the instructions seem to be for pushrod engines!! Gonne be a mare methinks!