Search found 1483 matches

by rd84
Fri Jan 12, 2024 8:53 pm
Forum: Engines
Topic: Engine start problem after TSI mods
Replies: 16
Views: 681

Re: Engine start problem after TSI mods

Hi all, I cannot start my engine after modifying it as per TSI. I measure now 125 psi compression in each cylinder: have I gone too far? The thing is I weight 63 Kg, and my son who weights 80 kg has no problem to start the engine! Should I put 20 kg in my backpack and try again? Happy new year all!...
by rd84
Tue May 02, 2023 9:16 am
Forum: Chassis, Brakes & Suspension
Topic: RD500 fork bottoms out
Replies: 5
Views: 1643

Re: RD500 fork bottoms out

PDQ in the UK will provide springs according to your weight - get Racetech emulators for the damping as well - they make a massive difference - a new shock such as Nitron or Hagon for your weight will also help the handling.

Cheers
Paul
by rd84
Mon Mar 06, 2023 7:03 am
Forum: Electrical & Wiring
Topic: Question about earth wire
Replies: 2
Views: 1236

Re: Question about earth wire

Hi,

On my 47X bike the earth wire was attached between the top battery box bracket (47x-21395-00) and the frame bracket behind the plastic battery box

Cheers
Paul
by rd84
Thu Feb 23, 2023 5:51 am
Forum: Bodywork
Topic: 1991 YZR 500 - best supplier?
Replies: 3
Views: 1196

Re: 1991 YZR 500 - best supplier?

The King Carbon is available as pure YZR and modified with widened belly pan for the RD500

Cheers
Paul
by rd84
Mon Jan 16, 2023 4:26 pm
Forum: Engines
Topic: Hose Tail Brass Fitting for Check Valve Replacement
Replies: 9
Views: 2528

Re: Hose Tail Brass Fitting for Check Valve Replacement

I’ll let you know how I get on with the new bits - previously I’ve used the spring clips - I’ve got the diagram you mention thanks
by rd84
Sun Jan 15, 2023 8:12 pm
Forum: Engines
Topic: Hose Tail Brass Fitting for Check Valve Replacement
Replies: 9
Views: 2528

Re: Hose Tail Brass Fitting for Check Valve Replacement

I’ve seen a few crack as well. I think removing the old ones is an excellent idea. It also eliminates any chance of the old one sticking closed. As always great ideas from club members. Quite scary that they can crack - I’m sure totally new Yamaha valves and the new connectors is the best and safes...
by rd84
Sat Jan 14, 2023 3:52 pm
Forum: Engines
Topic: Hose Tail Brass Fitting for Check Valve Replacement
Replies: 9
Views: 2528

Re: Hose Tail Brass Fitting for Check Valve Replacement

I have been using inline valves since putting bike together and nothing but track time. The OEM ones are still installed but if those adapters will work why not remove the stock valves? I would have taken mine out if i could have located those and they fit. My issue with the stock check valves is c...
by rd84
Fri Jan 13, 2023 6:23 pm
Forum: Engines
Topic: Hose Tail Brass Fitting for Check Valve Replacement
Replies: 9
Views: 2528

Re: Hose Tail Brass Fitting for Check Valve Replacement

Hi Mike,

This needs care though - I've had the OEm valves seize in both the open and closed positions.

Cheers
Paul
by rd84
Fri Jan 06, 2023 7:50 am
Forum: Engines
Topic: Just lost the mid-range on my modified RZV500R
Replies: 19
Views: 4668

Re: Just lost the mid-range on my modified RZV500R

Did his dyno do A/F ratio or CO. I take it no EGTs are installed. I always run the same main jets in mine. Could be float levels. But if it is running well, congrats. No EGT’s fitted . The dyno was a new Dynostars dyno z as nd it looked at A/F ratio’s It was Dave at MuttsNuts who did the work. Chee...
by rd84
Wed Jan 04, 2023 5:41 pm
Forum: Engines
Topic: Just lost the mid-range on my modified RZV500R
Replies: 19
Views: 4668

Re: Just lost the mid-range on my modified RZV500R

Sounds reasonable. Mine with oval bored carbs that Rick Lance did with pipes and Zeel is 90 and 47 ft lb. I believe around 9,500 to 10 k max power. Shift at that point or 9 when at the track. Those 4 carbs are a bitch. The carbs were hard work - they all ended up a little bit different on needle he...
by rd84
Mon Jan 02, 2023 8:47 pm
Forum: Engines
Topic: Just lost the mid-range on my modified RZV500R
Replies: 19
Views: 4668

Re: Just lost the mid-range on my modified RZV500R

Hi Everyone- Thanks for your advice and information- much appreciated - there were quite a few problems going on - The Zeeltronic lost all of its data and had just a few nonesense values left over which allowed the engine to run …. The jetting changed quite a bit …. Both pilot and mains …. It needed...
by rd84
Sun Dec 18, 2022 12:01 pm
Forum: Bodywork
Topic: What temp for the thermal adhesive
Replies: 6
Views: 1350

Re: What temp for the thermal adhesive

rammstein86 wrote: Wed Nov 30, 2022 3:55 am Sorry i don't understand prostate and nuts

It's a joke ?
The seat can get very hot in warm weather
by rd84
Sun Nov 13, 2022 8:39 pm
Forum: Engines
Topic: Carb leaking - finally me as well
Replies: 7
Views: 1699

Re: Carb leaking - finally me as well

Hi Wolfgang,

Have you checked your fuel tank for rust or other debris ?

Cheers
Paul
by rd84
Thu Nov 10, 2022 2:02 pm
Forum: Engines
Topic: Just lost the mid-range on my modified RZV500R
Replies: 19
Views: 4668

Re: Just lost the mid-range on my modified RZV500R

BTW: On my RD350's an engine rebuild (i.e. new pistons & honed bore) typically makes it require a slightly richer setting, if the old state had a rather low'ish compression (worn bore, rings stuck due to carbon) Especially on the EFI bike this is extremely visible as I'm running AlphaN which me...
by rd84
Mon Nov 07, 2022 8:54 pm
Forum: Engines
Topic: Just lost the mid-range on my modified RZV500R
Replies: 19
Views: 4668

Re: Just lost the mid-range on my modified RZV500R

the only odd thing found so far are the YPVS and ignition values in the Zeeltronic which are nothing like the ones the dyno guy put in This will have a huge effect, so that'll be my #1 suspect. But they don't change on their own. Someone has either changed that or missed to save optimized settings....