Roller barrels

Author
Discussion

jack&mle

Original Poster:

623 posts

246 months

Thursday 6th October 2005
quotequote all
Do some one know the cost of a set of roller barrels as fitted on the R500?
Are they a special Caterham parts?

I'm might be looking for one! :D

Jack

R300 CYA

241 posts

235 months

Thursday 6th October 2005
quotequote all
from what i gather there are two lots of throttle bodies that have been fitted to them, one caterham, one not caterham. will be dam expensive no doubt. What about the swindon ones on blatchat

jack&mle

Original Poster:

623 posts

246 months

Thursday 6th October 2005
quotequote all
Haven't spotted it!
Any chance of a link?

Jack

R300 CYA

241 posts

235 months

jack&mle

Original Poster:

623 posts

246 months

Thursday 6th October 2005
quotequote all
Thank you!

Jack

bertie

8,566 posts

291 months

Thursday 6th October 2005
quotequote all
The earlier VHPD engine as user in the Superlight R used Rover KV6 throttle bodies with butterfly throttles.

The R300, R400 & R500 use Caterham roller barrel throttle bodies which are a custom casting (with Caterham cast into it), presumably made for Caterham by someone.

Apparently the differance is small in terms of flow rates but the roller barells are quicker reacting.

jack&mle

Original Poster:

623 posts

246 months

Thursday 6th October 2005
quotequote all
How often to they appear second hand?

Jack

R300 CYA

241 posts

235 months

Thursday 6th October 2005
quotequote all
some like this? 3rd pic

www.r300.net/index.php?module=photoshare&func=showimages&fid=64

>> Edited by R300 CYA on Thursday 6th October 17:33

jack&mle

Original Poster:

623 posts

246 months

Thursday 6th October 2005
quotequote all
I don't have access to the picture

Can you e-mail it directly to me?

jack_mle_c21@yahoo.co.uk

Cheers

Jack

jack&mle

Original Poster:

623 posts

246 months

Thursday 6th October 2005
quotequote all
Something like this



c

>> Edited by jack&mle on Thursday 6th October 17:42

.Adam.

1,839 posts

270 months

Thursday 6th October 2005
quotequote all
Small thread hijack, but whats the difference betewenn roller barrels, and individual throttle bodies, like Jenveys?

Murph7355

38,909 posts

263 months

Thursday 6th October 2005
quotequote all
Roller barrels have nothing to get in the way of airflow when fully open. The butterfly on a trad throttle body will always be in the air flow to a greater or lesser extent (the spindle for it and a but of the butterfly).

Having driven with both, the difference was imperceptible to me, and I wouldn't pay extra for roller barrels.

The original SLR throttle bodies were a lash up from the KV6 as mentioned, and the manifold for them restricted their performance.

rubystone

11,254 posts

266 months

Thursday 6th October 2005
quotequote all
Having driven examples of cars with SLR "lash up" TBS and Jenveys, I have to say that there was little difference between the two. Can't comment on Roller Barrels though

jackal

11,249 posts

289 months

Friday 7th October 2005
quotequote all
rollerbarrels .... bragging rights and engine zymolling


they dont add any more power, just more induction noise at your local db-friendly circuit

jack&mle

Original Poster:

623 posts

246 months

Friday 7th October 2005
quotequote all
So the normal DTH tb and roller barrel flow the same amount of air! They do look good though

That is a good news

Thanks Jakal

I can now stop looking for a set

jackal

11,249 posts

289 months

Friday 7th October 2005
quotequote all
speak to steve butts

i know he did a back to back rollerbarrel vs. control test at emerald

R300 CYA

241 posts

235 months

Friday 7th October 2005
quotequote all
The noise is awesome tho

jimmyslr

805 posts

280 months

Sunday 9th October 2005
quotequote all
[redacted]

Fatbloke

396 posts

287 months

Monday 10th October 2005
quotequote all
Jenveys

better

cheaper

easier to set up and maintain

gives beter low speed running

and starting

Rollerbarrels

Marketing

Expensive

No use on a road car