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 Posted: Fri Feb 26, 2010 12:40 pm |
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Joined: Feb 07, 2010
Posts: 3327
Trade Rating: +9
Location: Ring y0
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Yeah well, I'm gonna let him work out all the geometry nonsense, and then pay him what he wants 
Been an expensive month 
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Posted: Sat Feb 27, 2010 9:25 am |
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Joined: Feb 07, 2010
Posts: 3327
Trade Rating: +9
Location: Ring y0
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| Edward wrote: |
| Jamie wrote: |
They're made by Jenvey, so I'm guessing there made properly 
I've gone for the 45mm bodies which are manufactured to work best with cars above 200bhp |
| From the Jenvey website wrote: |
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Choice of bore size is a balanced compromise resulting from the following;
1) A larger bore leads to lower flow resistance, but obeying the laws of diminishing returns.
2) A smaller bore leads to better throttle control and response (never underestimate) and improved fuel mixing.
3) The system should be considered in total - from (at least) trumpet flange to cylinder and proportioned accordingly.
Basic references for BHP per cylinder, assuming ca 120mm from butterfly to valve head and a max of 9,000 rpm are;
Up to 30 - 30mm, up to 33 - 32mm, up to 39 - 35mm, up to 46 - 38mm, up to 51 - 40mm, up to 56 - 42mm
Up to 65 - 45mm, up to 74 - 48mm, up to 80 - 50mm |
In short 45mm bodies are perfect for 65bhp/cylinder = 260bhp. You don't think you might have gone too big with the 45mm bodies? |
Dragged up from an email from Sandy;
"45mm is perfect for this spec, 42mm might be slightly better low down on standard engines, but they generally become restrictive much over 200bhp, it depends on the whole cam package etc being used, but for the package I'll suggest 45s will work better."
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Posted: Sat Feb 27, 2010 10:39 am |
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Joined: Feb 13, 2010
Posts: 451
Trade Rating: +2
Location: Stafford
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jamie when you gona sort fittng these jenveys?? and cams
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| 206 Gti 180 Cat-camshafts 804's, Cat cams CTPE 002 exhaust vernier pully, RS tuning remap, Cat back janspeed exhaust, K@N Typhoon induction kit- heat wrapped, Exhaust manifold heat wrapped, Goodridge brake flexi's poly bushs in rear lateral arms, blue led speedo convertion, 50mm Eibach sport line springs, ......
180 Doctor
Hemwoods Gti180 / Pug specialist | |
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Posted: Sat Feb 27, 2010 11:02 am |
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Joined: Feb 07, 2010
Posts: 3327
Trade Rating: +9
Location: Ring y0
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Late July/early August due to insurance mate
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Posted: Sat Feb 27, 2010 11:23 am |
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Joined: Feb 21, 2010
Posts: 354
Trade Rating: 0
Location: midlands
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just read throug the thread and all i can say is what a car 10/10
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Posted: Sat Feb 27, 2010 11:23 am |
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Joined: Feb 07, 2010
Posts: 3327
Trade Rating: +9
Location: Ring y0
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Cheers 
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Posted: Sat Feb 27, 2010 11:41 am |
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Joined: Feb 07, 2010
Posts: 561
Trade Rating: +2
Location: South Wales
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how much insurance gona go up by? and what company you with at the moment!?!?!? to get it for 1300?
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Posted: Sat Feb 27, 2010 11:42 am |
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Joined: Feb 07, 2010
Posts: 3327
Trade Rating: +9
Location: Ring y0
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I'm with Admiral, my insurance goes down next year, even with the bodies, to £1100
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Posted: Sat Feb 27, 2010 11:42 am |
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Joined: Feb 07, 2010
Posts: 561
Trade Rating: +2
Location: South Wales
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adriean flux? they quoted me 5500! for a 180!!!!!! with bell and one years no claims i gt 1700!
EDIT:- sorry i missread your previous comment! hummm i might see how i do with admiral! u one the 2 car policy? or just by yourself
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Posted: Sat Feb 27, 2010 11:46 am |
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Joined: Feb 07, 2010
Posts: 3327
Trade Rating: +9
Location: Ring y0
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I have 2 year's NCB + pass plus...
What do you mean about Adrian Flux?
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Posted: Sat Feb 27, 2010 11:46 am |
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Joined: Feb 07, 2010
Posts: 3327
Trade Rating: +9
Location: Ring y0
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I'm on my own insurance, no fronting or anything dodgy...
I'm the policyholder and main driver on a 12 month policy.
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Posted: Sat Feb 27, 2010 11:48 am |
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Joined: Feb 07, 2010
Posts: 561
Trade Rating: +2
Location: South Wales
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thats a wicked price yerh 1700 was under my name! its tempting because at the moment i payed 1400 for a 1.1!!!!!!!!!! which is rediculus! so an ectra 300 quid nd i get the extra 120 BHP and half the mods i have declared are standard on the 180 lol! just need to save up to buy a 180 now!
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Posted: Sat Feb 27, 2010 12:13 pm |
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Joined: Feb 08, 2010
Posts: 7045
Trade Rating: +5
Location: In the garage
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| Jamie wrote: |
| Also if anyone knows where I can get solid lifters, I'm all ears |
What do you need those for?
| Jamie wrote: |
Dragged up from an email from Sandy;
"45mm is perfect for this spec, 42mm might be slightly better low down on standard engines, but they generally become restrictive much over 200bhp, it depends on the whole cam package etc being used, but for the package I'll suggest 45s will work better." |
How much power are you going for? The inlet manifold is 42mm so why go for 45mm TBs? Jenvey suggest a 42mm body is ideal for 56bhp/cylinder = 224bhp. That's an ideal size, not a maximum power for the size...there's plenty of flow left over at that size and you'll still have good response and torque at low revs too where road car engine run at most of the time.
At the end of the day there's not a huge difference between a 45mm and a 42mm body. I'd just rather have a great mid range rather than great top end revs.
On the subject of insurance mine is just £450 fully comp with everything declared and with protected NCB too!
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| 2001 GTi 138, Bilstein Sprint dampers, H&R springs, 21mm Peugeot Sport torsion bars, 22mm rear ARB, Peugeot Sport Group A wishbones, 283mm discs, Goodridge stainless hoses, Maniflow 304 grade 4-2-1 2.5" manifold and system, 200 cell cat, Richard Longman head, 45mm Jenvey throttle bodies, 9.5mm TB spacers, 90mm air horns, Jenvey throttle linkage, Jenvey fuel rail, Aeromotive and Goodridge fuel fittings and braided hose, ITG sausage filter, Radtec custom radiator, Piper Ultimate Road cams, Piper vernier pulleys, Omex 600 ECU. Saxo electric PAS pump, Vibra Technics engine mounts. Samco coolant hoses, TTV steel flywheel, 4.76 final drive ratio, 307 CC 180 ratios. 2019 BMW 530i. 2017 Mercedes C300 convertible. | |
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Posted: Sat Feb 27, 2010 12:16 pm |
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Joined: Feb 07, 2010
Posts: 3327
Trade Rating: +9
Location: Ring y0
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Just to see how much they cost, abandoned all thoughts of going that route though...
I really don't know why Sandy recommended the 45mm bodies, but I trust him as he is setting them all up for me so that's what I bought. I agree though I would rather mid range than top end power...
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Posted: Sat Feb 27, 2010 12:17 pm |
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Joined: Feb 07, 2010
Posts: 3327
Trade Rating: +9
Location: Ring y0
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I'm only a baby, most insurers wouldn't quote me with my setup at 20, so £1100 isn't that bad!
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