KET FR32 CAM
Author
Discussion

kevinarbury

Original Poster:

145 posts

168 months

Friday 17th February 2012
quotequote all
thinking of upgrading the cam in my tiger cat e1, 2 litre pinto sohc, was thinking of fitting a kent fr32?

am after lower end grunt, improved 0-60 etc

any tips?

kevinarbury

Original Poster:

145 posts

168 months

Friday 17th February 2012
quotequote all
yeah good, title was spelt wrong but im sure you all get the drift! ha ha smile

Mike N

24 posts

185 months

Friday 17th February 2012
quotequote all
Fit the full kit with springs etc etc and a new cam center brg as they all wear quickly.

I used to run a 2.0 ltr Pinto rally Escort and fitted group One or "A" In & Exh waisted valves, some minor porting then surfaced the head by 1mm. You will need a vernier pulley to re-set the cam timming as skiming will advance the ignition and retard the cam timing at the same time. Try and use a 2.0 IS or 205 blocked head from a Sierra - they are better.

If you fit larger bore Ford pistons over 1 mm don't skim the head.

A good carb set up would be the std twin choke, I used a 38 DGAS with some jet changes. The DGAS opens both chokes at the same time.

I ran the above spec for many years less the overboring due to capacity rules, always had great results.

Good luck!


kevinarbury

Original Poster:

145 posts

168 months

Saturday 18th February 2012
quotequote all
Thanks for the reply!!! Very helpful!

So what kind of performance difference would that the kent fr32 make? Is it the right one to go for?

HughG

3,703 posts

263 months

Saturday 18th February 2012
quotequote all
Kevin is your profile photo of the engine in question?

If so you'll see better gains from changing the carb rather than the cam, as standard the 2.0 had a Webber 32/36, some have been upgraded to a 38/38, with your exhaust (which looks pretty good) the former is good for 115hp, the latter 125hp ish. Your options are either to go twin carbs (40s or 45s), or to go the bike carb route.

A standard 2.0l on 40s and will yield ~130hp, 45s won't increase this much if any on a standard engine but if you go for a cam, big valve head, overbore to 2.1 etc. there is a benefit to the 45s over 40s. 45s and an FR32 should see 140ish, maybe 145hp. 600cc bike carbs should be adequate unless you're going to do more than just the cam, and will be a bit better on fuel than the Webbers/Dellortos.

Do you know what ignition you are running? If you are fitting twin carbs/bike carbs there's a benefit from electronic ignition, or even better a mapable ignition such as megajolt or emerald. I think a standard electronic ignition is about £150; megajolt is around £250 but is (comparitively) a lot of work.

Of course you could change the cam as well! Most cams are more aggressive than standard, and an FR32 definitely is, so FR32 for instance you probably won't gain anything and may even loose a bit below 2000-2500rpm, but will get more through the mid and top of the range than standard. Kent Cams also do a high torque cam (FR30) which should improve the bottom and mid range, but you won't gain much if anything at the top. You'll also need to change the followers and springs, and as mentioned earlier get a vernier cam pulley (£60ish).

Without knowing what your budget is it's hard to advise. With twin Webber or Dellorto 40s or 45s, you'll need a new inlet manifold, if you get second hand bits you're probably looking at £600ish inc. a rolling road setup. Bike carbs will need a custom inlet manifold (you can get this from Bogg Brothers, or Flak Monkey on locostbuilders), and you could either put a setup together yourself or buy one as a package from Bogg Brothers, they've got a fantastic reputation and will be able to drill the jets in the bike carbs to the correct size so chances are you wont need to get it setup afterwards.

Edited by HughG on Saturday 18th February 14:48