Probably another Kenne Belled XKR
#61
![Default](/forum/images/icons/icon1.gif)
Aaah... sorry Andre, I confused the numbers in my head between the XKR and STR with the 2.1.
I think I will give fitting the 2.1 a crack sometime next year, I made some initial measurements and it looks good. These twin screws are a hell of a lot of fun, so I can only imagine what the bigger ones are like. Even with the over-spun 1.7, there's so much torque that when I floored it the other night at 50mph the car got sideways
I think I will give fitting the 2.1 a crack sometime next year, I made some initial measurements and it looks good. These twin screws are a hell of a lot of fun, so I can only imagine what the bigger ones are like. Even with the over-spun 1.7, there's so much torque that when I floored it the other night at 50mph the car got sideways
![Icon Banana](https://www.jaguarforums.com/forum/images/smilies/icon_banana.gif)
#62
#63
#65
#66
![Default](/forum/images/icons/icon1.gif)
Yes, throttle should be 100% open. 260g/s is roughly 325hp from the crank. I tested my old 80mm BMC CDA and it maxed at 322g/s - back to BMC 85mm cone filter and again easy 400g/s with stock AJ26 MAF.
#67
![Default](/forum/images/icons/icon1.gif)
Iirc a stock eaton setup would be around 300-320 gr/sec at wot around 6000 rpm (depends also on environmentals of course), and (according to Count Iblis) the stock intake would have about 140mbar of vacuum (for a 4.2).
2.5 psi would be about 172mbar, so maybe with the 260 gr/sec it could fit. But I have never done these type of measurements (i.e. not fully wot), so can’t say for sure what’s right or not.
Have you checked the throttle opening with the engine not running/ignition on? That will tell in which direction you need to search.
2.5 psi would be about 172mbar, so maybe with the 260 gr/sec it could fit. But I have never done these type of measurements (i.e. not fully wot), so can’t say for sure what’s right or not.
Have you checked the throttle opening with the engine not running/ignition on? That will tell in which direction you need to search.
#68
#69
#70
#71
![Default](/forum/images/icons/icon1.gif)
I agree with Avos and XJR 1999 Finnish bloke about the intake tube- 3 inches isn't much. Oh, and having 3 inches DOESNT improve throttle response- like some companies suggest ;-)
Yes, I know there is a smaller bottle neck- in terms of the MAF sensor- but the retriction is the net sum of all the elements.
Have a look at the post I just did here
https://www.jaguarforums.com/forum/j...6/#post1588418
The 4.2 Jag SC is at around 140 mbars at peak power, the older AJ27 SC is at around 115 mbars.
When you start to try to flow 1700-1900 kg/hr that same intake- even a slightly modified one will quickly get to 220 mbars! 90 mbars should be a better target! But I DO care about refinement and noise both in terms of intake and exhaust
Yes, I know there is a smaller bottle neck- in terms of the MAF sensor- but the retriction is the net sum of all the elements.
Have a look at the post I just did here
https://www.jaguarforums.com/forum/j...6/#post1588418
The 4.2 Jag SC is at around 140 mbars at peak power, the older AJ27 SC is at around 115 mbars.
When you start to try to flow 1700-1900 kg/hr that same intake- even a slightly modified one will quickly get to 220 mbars! 90 mbars should be a better target! But I DO care about refinement and noise both in terms of intake and exhaust
Thread
Thread Starter
Forum
Replies
Last Post
vacolorito
PRIVATE For Sale / Trade or Buy Classifieds
0
09-25-2015 09:29 AM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)