|
|
|
Nov 28, 2006 17:43:16 GMT
|
|
As most of you know I'm re-building a KR (1.8 16v VW) engine for the Scirocco, but I can't decide if I should keep the injection set-up, or bin it and fit twin carbs...?
My reckoning is, if I sell all the injection bits it'll nearly fund either a set of 2nd hand weber's / dellorto's or an inlet manifold...
|
| |
 I like long walks, especially when they're taken by people I don't like. |
|
|
|
|
|
Injection or CarbsBenzBoy
@benzboy
Club Retro Rides Member 7
|
Nov 28, 2006 17:46:52 GMT
|
Are there significant power gains to be had using carbs? If so, I'd go for it. Personally I prefer injection as I find it a lot easier to work on... that said, theirs nothing like the sound of an engine sucking on twin 40's!  |
| |
|
|
|
|
|
Nov 28, 2006 17:49:44 GMT
|
|
id say carbs everytime but depends on the work involved
|
| |
|
|
|
|
|
Nov 28, 2006 17:52:00 GMT
|
|
Not sure on the exact power gains, but carbs are better for bhp and torque.
Work envolved - 6 of one and half a dozen or the other.
|
| |
I like long walks, especially when they're taken by people I don't like. |
|
|
|
|
Nov 28, 2006 17:58:38 GMT
|
|
What about keeping the injection system, but swapping the injectors into bike TB's?
J
|
| |
|
|
|
|
|
Nov 28, 2006 18:03:56 GMT
|
What about keeping the injection system, but swapping the injectors into bike TB's? J How would I know which ones to get? Won't a custom inlet cost £££? Won't I need a different ECU? |
| |
Last Edit: Nov 28, 2006 18:04:24 GMT by iRocco
I like long walks, especially when they're taken by people I don't like. |
|
|
|
|
Nov 28, 2006 18:08:04 GMT
|
If all the air still goes through the afm (I'm guessing its an AFM based system?) then the stock ECU can handle it, same with a MAP system. The TB's can be matched by the BHP that the original application had, so a CBR600 = around 100bhp, CBR900 = around 150bhp Manifold is around £180 from bogg brothers, but they do take their time  J |
| |
|
|
|
|
|
Nov 28, 2006 18:10:41 GMT
|
If all the air still goes through the afm (I'm guessing its an AFM based system?) then the stock ECU can handle it, same with a MAP system. The TB's can be matched by the BHP that the original application had, so a CBR600 = around 100bhp, CBR900 = around 150bhp Manifold is around £180 from bogg brothers, but they do take their time J Thanks for the info. IFIK what type of system it has...but looking at it I'd have to plug the original injector holes up in the manifold. Just checked ebau - and bike TB's are tuppence compaired to twin 40's etc. |
| |
I like long walks, especially when they're taken by people I don't like. |
|
Stu
Posted a lot
Posts: 2,913
|
|
Nov 28, 2006 18:14:10 GMT
|
I voted injection, depends what you want to use the car for. For reliability and economy I'd stick with k-jet, for noise and possibly a bit more power & torque - carbs. To be honest, you'll get a reliable 145bhp and 120 odd lbsft out of that engine with the standard k-jet correctly set up, doubt you'd fare much better on carbs although the noise would be nice. I know nothing about this new fangled throttle body stuff but it sounds interesting! Edit: regardless of which you go for bosh a lightened flywheel on there, makes it rev so much easier, flowed head is a good mod too but costs a fair bit. |
| |
Last Edit: Nov 28, 2006 18:15:18 GMT by Stu
'89 BMW E30 325i Sport, '04 MINI Cooper S, '09 Volvo V70 D5
|
|
|
|
|
Nov 28, 2006 18:16:55 GMT
|
Someone mentioned to me a while ago that I could replace my k-jet set up that comes with the KR, and fit the set up that comes with the 2.0 16v (ABF??) to gain BHP....? Lightened flywheel - already off and will be fitted to the lathe before xmas  Flowed head - again already on the cards...but DIY jobby *I think today should be the W keys turn*  |
| |
Last Edit: Nov 28, 2006 18:18:59 GMT by iRocco
I like long walks, especially when they're taken by people I don't like. |
|
|
|
|
|
Injection or CarbsBenzBoy
@benzboy
Club Retro Rides Member 7
|
Nov 28, 2006 18:28:09 GMT
|
|
If it's K-Jet, wouldn't you need an aftermarket ECU and all the sensors, to run bike TBs? I'm assuming all bike TBs are electronic...
|
| |
|
|
|
|
|
Nov 28, 2006 18:33:58 GMT
|
|
yeah i don't think that mechanical injection will work with bike TB's, as you say BenzBoy bikes are all electronic injection
J
|
| |
|
|
|
|
|
Nov 28, 2006 19:04:44 GMT
|
|
Is it a daily driver?
Twin 40s on a daily isn't what I'd go for. If it s a weekend/second car - why not?
Usually EFI is more reliable, more flexible, more economical, better for the environment, better at cold starting...
I say usually because there are a few "bad" systems out there which carbs would better for reliability say, but for the most part EFI is best for "drivers".
|
| |
1941 Wolseley Not Rod - 1956 Humber Hawk - 1957 Daimler Conquest - 1966 Buick LeSabre - 1968 Plymouth Sport Fury - 1968 Ford Galaxie - 1969 Ford Country Squire - 1969 Mercury Marquis - 1970 Morris Minor - 1970 Buick Skylark - 1970 Ford Galaxie - 1971 Ford Galaxie - 1976 Continental Mark IV - 1976 Ford Capri - 1994 Ford Fiesta
|
|
|
|
Injection or Carbsrustingdeathtrap
@GUEST
|
Nov 28, 2006 19:19:59 GMT
|
|
Injection all the way.
Its the future and all that ;D
Seriously, if it was me i'd go out, buy a megasquirt and a set of bike throttle bodies and just go for it.
The things you will learn along the way will make it well worthwhile.
And I cant see carbs giving better bhp than properly set up injection, unless your talking about the standard set up.
EDIT; You were talking about the standard set up.
I'll get me coat ;D
|
| |
Last Edit: Nov 28, 2006 19:21:35 GMT by rustingdeathtrap
|
|
Stu
Posted a lot
Posts: 2,913
|
|
Nov 28, 2006 20:18:26 GMT
|
Someone mentioned to me a while ago that I could replace my k-jet set up that comes with the KR, and fit the set up that comes with the 2.0 16v (ABF??) to gain BHP....? The ABF engine came with the later digifant management which is electronic rather than mechanical injection like k-jet and can therefore be chipped/remapped so to speak. That said, I've never heard of it being retro-fitted to a KR engine, better sticking with k-jet or going for megaquirt or something if you do want a more modern setup I would say. I have heard of plenty of people doing the opposite though and fitting ABF's into Mk2 Golf's etc and converting them to k-jet injection successfully. Lightened flywheel - already off and will be fitted to the lathe before xmas Flowed head - again already on the cards...but DIY jobby Good stuff! Make sure to use new pressure plate and flywheel bolts when you put the flywheel back on. Some of the bolts are stretch ones and supposedly one use only, although I did re-use mine once by accident. Best be on the safe side, you don't want the flywheel coming adrift at 7k rpm...  |
| |
'89 BMW E30 325i Sport, '04 MINI Cooper S, '09 Volvo V70 D5
|
|
|
|
|
Nov 28, 2006 20:48:04 GMT
|
carbs! for teh sound  |
| |
 once again rocking with 1117cc and 4 gears! |
|
|
|
|
Nov 28, 2006 20:55:21 GMT
|
|
hhmmmm, I'd plump for the "curse word flap" for day to day use, twin 40s if your hardcore. bike ITBs have been mentioned, what about bike carbs? supposed to be much smoother than webers on the road. or is autohausdolby's polo probs putting you of that route?
|
| |
|
|
filmidget
East Midlands
Mostly Lurking
Posts: 1,652
|
|
Nov 28, 2006 21:25:20 GMT
|
|
What system (K-jet or carb) is currently on the car the engine is going into?
What useage wil the car have when finished?
Are you happy with 140bhp, or looking for more?
Will you be capable of plumbing in an aftermarket ECU and tuning it?
In fact are you happy tinkering with the car, or is this a get-it-finished-and-only-then-have-to-drive-it kind of project?
|
| |
'79 MG Midget 1500 - Still patiently awaiting attention
'02 Vauxhall Astra 1.8 Elegance(!) - Better than you might think
'03 Mazda MX5 - All new and shiny looking (thanks to Antony at Rust Republic)
'09 Renault Clio - Needs to go.
|
|
|
|
|
Nov 29, 2006 11:08:00 GMT
|
|
The car is currently running a carb (32/34 DTML)
The car is and will be my daily - around 90 miles a day, so obv needs to be reliable and economical.
I'd be more than happy with the 140bhp the KR gives out, I just wanted to do something outside the box of the normal 16v conversions...without spending £££'s
|
| |
I like long walks, especially when they're taken by people I don't like. |
|
|
|
|
Nov 29, 2006 11:13:26 GMT
|
Carbs, and I'll buy the K jet curse word off you to convert my camper if you like 16vs on 40's with a mild cam are very drivable, but you need to make sure they're kept in tune K jet is fit and forget pretty much... but you'll need a lot of pressure from the pump... |
| |
The lurker formerly known as Cappuccinocruiser.. or wedgedout..
|
|
|
|
[*]
[*]
