MK2 Golf 1.8t Drag car

General talk about successes. See older information on MSRUNS forum.
suberimakuri
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Re: MK2 Golf 1.8t Drag car

Post by suberimakuri »

Sucks about the old motor, but rad about the new one!
Good luck on dyno.
Carlg
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Re: MK2 Golf 1.8t Drag car

Post by Carlg »

So it made this with a 100 shot of nitrous
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Made less power than the old engine but its less compression so that's expected 446@9.5-1 and 420@8.5-1 but it survived :)
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Re: MK2 Golf 1.8t Drag car

Post by Carlg »

So a year on I have done a few upgrades, Its now running a HY35 turbo, less nitrous from 100 shot to a 40 shot and on E85 with a flex fuel sensor :D
Last weekend I ran a PB of 10.63 @133 mph (first weekend with the e85 and its terminals are the same as when i was running the 100 shot on petrol at the same boost :yeah!: )

here are a couple of YouTube videos

https://www.youtube.com/watch?v=_ykX6WER3tA

https://www.youtube.com/watch?v=l07qn0C-AWk
HidRo
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Re: MK2 Golf 1.8t Drag car

Post by HidRo »

Awesome!!
No inside footage?
How is that HY35 turbo? Takes a long time to full boost? Ball bearing? Journal bearing?
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Carlg
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Re: MK2 Golf 1.8t Drag car

Post by Carlg »

Hi, No inside footage, need to fix that for next weekend (door slammers @ santapod) but there is some good footage from Zeon TV of me running my PB against the beetle here that was uploaded yesterday.

https://youtu.be/EZbQcJ7M60A?t=16m52s

the HY35 spools alot faster than the HX35 (but most of that is probably due to the exhaust housing 14cm to 10cm for the HY) and the E85 seems to spool the turbo faster too when i run it really rich so really quite happy, on the sunday of doorslammers i may turn it up a little more as i still have some boost left on the table and i can always up the nitrous shot. :lol:

oh and its journal bearing
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Re: MK2 Golf 1.8t Drag car

Post by HidRo »

Those HY35 turbos are cheap, aren't they? And they compare to GT30?
That is really good 1/4mile time!! Good luck for next weekend!
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Paul_VR6
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Re: MK2 Golf 1.8t Drag car

Post by Paul_VR6 »

Hy35 is more like a small hotside 61mm gt35 in power delivery and efficiency.
-Paul
1992 Corrado SLC 3.6 VR6 11.38@120 - MS3 Pro Ultimate - Microsquirt I/O - Can EGT - Racepak IQ3s
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Carlg
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Re: MK2 Golf 1.8t Drag car

Post by Carlg »

Im not sure how it compares as i have only really used these Holsets and yes they are cheap (so much so i bought a spare 8) that i might use on my aircooled project when it gets off the ground)

once the next couple of weekends are out of the way I will be putting on a mates dyno just to see what its making, My next turbo i am looking at fitting is a HE400VG if i can get the ms3 to control it :D
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Re: MK2 Golf 1.8t Drag car

Post by Carlg »

So last night i picked up a pair of cams for the 1.8t (currently on stock cams) Intake 252°/Exhaust 260° any advice welcome on how to tune for a change of cam.....
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Re: MK2 Golf 1.8t Drag car

Post by HidRo »

I would say it will be the same on a dyno.
Dyno, increase timing, see if torque is raising, if it is, increase timing a bit more. If it does not raise much, you should be close to the limit of timing, so either back off a bit, or leave it at a bit of risk :D

How much for a turbo like that? New? Used? Rebuilt?
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Carlg
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Re: MK2 Golf 1.8t Drag car

Post by Carlg »

the turbo I got a really good deal on from a mate that had bought it with a manifold for a vr6, he thought the turbo would be too small for him so we went halfs on the cost of the turbo and manifold, in the end it cost me £100 :lol: but the spare that i picked up was about £180, both were used although the one that came with the manifold had been recently rebuilt.

they do come up from time to time at that kind of price but you need to keep your eye out.

I was going to put those cams in before the weekend but i am going to wait and build the head up a little bit more (new exhaust valves and stronger springs etc) so that i can rev it a bit harder :D
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Re: MK2 Golf 1.8t Drag car

Post by HidRo »

And no problem changing gears?
d***..: Whenever I try to change gears up high RPM, and this is max 7200, it sticks at the "door", and does not go in...
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Paul_VR6
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Re: MK2 Golf 1.8t Drag car

Post by Paul_VR6 »

You probably need new syncros. For over 7500 we modify them. For over 8k you really need dog engagement.
-Paul
1992 Corrado SLC 3.6 VR6 11.38@120 - MS3 Pro Ultimate - Microsquirt I/O - Can EGT - Racepak IQ3s
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HidRo
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Re: MK2 Golf 1.8t Drag car

Post by HidRo »

I already took out some teeth from the syncros, as I remember you did and provided information to people.
Still doesn't work that good for me :D
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Carlg
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Re: MK2 Golf 1.8t Drag car

Post by Carlg »

I had my rev limiter set to 7900 with a shift light of 7500 and i dont have a problem shifting on a stock box, i think alot of that is due to my linkage and shift tower being very tight ( refreshed about 2 years ago with new 02j tt bits shorter throw) seems to work well
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Re: MK2 Golf 1.8t Drag car

Post by Paul_VR6 »

If removing teeth did’t work have a good look at the hub sliders. They may need some massaging.
-Paul
1992 Corrado SLC 3.6 VR6 11.38@120 - MS3 Pro Ultimate - Microsquirt I/O - Can EGT - Racepak IQ3s
kptuned.com - Megasquirting the World! Megasquirt Sales, Service, Tuning and More!
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HidRo
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Re: MK2 Golf 1.8t Drag car

Post by HidRo »

How would I go with massaging the hub? What needs to be done?
Paul_VR6 wrote:If removing teeth did’t work have a good look at the hub sliders. They may need some massaging.
Sent from my Redmi Pro using Tapatalk
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Re: MK2 Golf 1.8t Drag car

Post by Paul_VR6 »

Usually I replace them but they are $$$

After you remove them, file off any burrs and shape them back to a blunt point. If. You can’t shift, they are probably rounded off.
-Paul
1992 Corrado SLC 3.6 VR6 11.38@120 - MS3 Pro Ultimate - Microsquirt I/O - Can EGT - Racepak IQ3s
kptuned.com - Megasquirting the World! Megasquirt Sales, Service, Tuning and More!
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HidRo
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Re: MK2 Golf 1.8t Drag car

Post by HidRo »

The hubs I have no pics of, but this is how the syncro's were:
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Carlg
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Re: MK2 Golf 1.8t Drag car

Post by Carlg »

So took the car out at the weekend and had a few issues to start with and after chatting to a couple of UK drag legends at the weekend (John Webster and Richie Webb) they helped me understand the issue i was seeing with my nitrous jetting on E85 (basically i needed more fuel) I managed to run this .......

Image
here is a video:

https://www.youtube.com/watch?v=PSpFgfm ... e=youtu.be
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